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Journal of Integrative Agriculture 2020年第10期19卷 2407-2418页

作者： YANG Wei-bing QIN Zhi-lie SUN Hui LIAO Xiang-zheng GAO Jian-gang WANG Yong-bo HOU Qi-ling CHEN Xian-chao TIAN Li-ping ZHANG li-ping MA Jin-xiu CHEN Zhao-bo ZHANG Feng-ting ZHAO Chang-ping Beijing Engineering Research Center for Hybrid Wheat Beijing Academy of Agricultural and Forestry SciencesBeijing 100097P.R.China

Because of the yield increase of 3.5-15%compared to conventional wheat,hybrid wheat is considered to be one of the main ways to greatly improve the wheat yield in the *** this study,we performed a principal component analysis(PCA)on two-line hybrids wheat and their parents using the grain weight(GW),the length of spike(LS),the kernel number of spike(KSN),and spike number(SPN)as *** results showed that the variables could be classifed into three main factors,the weight factor(factor 1),the quantity factor 1(factor 2)and the quantity factor 2(factor 3),which accounted for 37.1,22.6 and 18.5%,respectively of the total variance in different agronomic variables,suggesting that the GW is an important indicator for evaluating hybrid combinations,and the grain weight of restorer line(RGW)could be used as a reference for parents *** hybrid combination with a higher score in factor 1 direction and larger mid-parent heterosis(MPH)of the GW and its parents were used to carry out the analysis of grain fling,1-aminocylopropane-1-carboxylicacid(ACC)and polyamine synthesis related *** results suggested that the GW of superior grain was significantly higher than that of inferior grains in BS1453xJS1(H)and its *** grain types showed a weight of H between BS 1453(M)and JS1(R),and a larger MPH,which may be caused by their differences in the active fling stage and the grain fling *** ADP-glucose pyrophosphorylase(AGPase),granule bound starch synthase I(GBSS/),starch synthaseⅡ(SSS),and starch branching enzyme-Ⅰ(SBE-1)expression levels of H were intermediated between M and R,which might be closely related to MPH formation of the *** with R and H,the GW of M at maturity was the *** expression levels of spermidine synthase 2(Spd2),ornithine decarboxylase(ODC)and S adenosylmethionine decarboxylase(SAMDC)had significantly positive correlations with the grain flig rate(1=0.77,0.51,0.59"),suggesting their major roles in the grain flli

关键词： hybrid wheat agronomic traits ethylene polyamines grain illing heterosis

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Hd1,Ghd7,and DTH8 synergistically determine the rice heading date and yield-related agronomic traits

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Journal of Genetics and Genomics 2022年第5期49卷 437-447页

作者： Kangli Sun Minghui Huang Wubei Zong Dongdong Xiao Chen Lei Yanqiu Luo Yingang Song Shengting Li Yu Hao Wanni Luo Bingqun Xu Xiaotong Guo Guangliang Wei Letian Chen Yao-Guang Liu Jingxin Guo State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of Life SciencesSouth China Agricultural UniversitySCAUGuangzhouGuangdong 510642China Guangdong Laboratory for Lingnan Modern Agriculture GuangzhouGuangdong 510642China

Heading date determines the seasonal and regional adaptation of rice(Oryza sativa L.)varieties and is mainly controlled by photoperiod sensitivity(PS).The core heading date genes Hd1,Ghd7,DTH8,and PRR37 act synergistically in regulating the *** this study,we systematically analyze the heading date,PS,and agronomic traits of eight homozygous lines with various combinations of Hd1,Ghd7,and DTH8 alleles in the prr37 background under long-day(LD)and short-day(SD)conditions,*** find that Hd1 alone promotes heading,regardless of the day ***,under LDs,Hd1 suppresses flowering,in coordination with functional Ghd7 or with Ghd7 and *** loci cooperate to negatively regulate the Ehd1-Hd3 a/RFT1 pathway and delay *** SDs,Hd1 competes with various heading suppressors to promote ***,the dual function of Hd1 is vital for *** lines carrying Hd1 alone show reduced plant height with fewer primary and secondary branches in *** carrying Ghd7 and DTH8(with hd1)show delayed heading and improve agronomic ***,our results reveal the regulation of rice PS flowering by the core heading date genes and their effects on agronomic traits,providing valuable information for the selection of rice varieties for adaptation to different light and temperature conditions.

关键词： Rice Photoperiod sensitivity Heading date Hd1 agronomic traits

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Should phenological information be applied to predict agronomic traits across growth stages of winter wheat?

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The Crop Journal 2022年第5期10卷 1346-1352页

作者： Yu Zhao Yang Meng Shaoyu Han Haikuan Feng Guijun Yang Zhenhai Li Key Laboratory of Quantitative Remote Sensing in Agriculture of Ministry of Agriculture and Rural Affairs Information Technology Research CenterBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Collaborative Innovation Center for Modern Crop Production Co-sponsored by Province and Ministry Nanjing Agricultural UniversityNanjing 210095JiangsuChina College of Geomatics Shandong University of Science and TechnologyQingdao 266590ShandongChina

Most existing agronomic trait models of winter wheat vary across growing seasons, and it is an open question whether a unified statistical model can be developed to predict agronomic traits using a vegetation index(VI) across multiple growing seasons. In this study, we constructed a hierarchical linear model(HLM) to automatically adapt the relationship between VIs and agronomic traits across growing seasons and tested the model’s performance by sensitivity analysis. Results demonstrated that(1) optical VIs give poor performance in predicting AGB and PNC across all growth stages, whereas VIs perform well for LAI, LGB, LNC, and SPAD.(2) The sensitivity indices of the phenological information in the AGB and PNC prediction models were 0.81–0.86 and 0.66–0.73, whereas LAI, LGB, LNC, and SPAD prediction models produced sensitivity indexes of 0.01–0.02, 0.01–0.02, 0.01–0.02, and 0.02–0.08, respectively.(3) The AGB and PNC prediction models considering ZS were more accurate than the prediction models based on VI. Whether or not phenological information is used, there was no difference in model accuracy for LGB,LNC, SPAD, and LAI. This study may provide a guideline for deciding whether phenological correction is required for estimation of agronomic traits across multiple growing seasons.

关键词： agronomic traits Phenological effect Vegetation index Hierarchical linear model Winter wheat

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QTL Mapping for Important agronomic traits in Synthetic Hexaploid Wheat Derived from Aegiliops tauschii ssp. tauschii

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Journal of Integrative Agriculture 2014年第9期13卷 1835-1844页

作者： YU Ma CHEN Guo-yue ZHANG Lian-quan LIU Ya-xi LIU Deng-cai WANG Ji-rui PU Zhi-en ZHANG Li LAN Xiu-jin WEI Yu-ming LIU Chun-ji ZHENG You-liang Triticeae Research Institute Sichuan Agricultural University School of Life Science and Engineering Southwest University of Science and Technology Agronomy College Sichuan Agricultural University CSIRO Plant Industry St Lucia QLD 4067 Australia

Aegiliops tauschii is classified into two subspecies： Ae. tauschii ssp. tauschii and Ae. tauschii ssp. strangulata. Novel genetic variations exist in Ae. tauschii ssp. tauschii that can be utilized in wheat improvement. We synthesized a hexaploid wheat genotype（SHW-L1） by crossing an Ae. tauschii ssp. tauschii accession（AS60） with a tetraploid wheat genotype（AS2255）. A population consisting of 171 F8 recombinant inbred lines was developed from SHW-L1 and Chuanmai 32 to identify QTLs associated with agronomic traits. A new genetic map with high density was constructed and used to detect the QTLs for heading date, kernel width, spike length, spikelet number, and thousand kernel weight. A total of 30 putative QTLs were identified for five investigated traits. Thirteen QTLs were located on D genomes of SHW-L1, six of them showed positive effect on agronomic traits. Chromosome region flanked by wPt-6133–wPt-8134 on 2D carried five environment-independent QTLs. Each QTL accounted for more than 10% phenotypic variance. These QTLs were highly consistent across environments and should be used in wheat breeding.

关键词： genetic map QTL DArT agronomic traits synthetic wheat Aegilops tauschii ssp.tauschii

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Cob color, an indicator of grain dehydration and agronomic traits in maize hybrids

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The Crop Journal 2022年第2期10卷 582-586页

作者： Xiao-Gui Liang Zhen Gao Si Shen Xue Zhao Li Zhang Shun-Li Zhou Key Laboratory of Crop Physiology Ecology and Genetic BreedingMinistry of Education/Jiangxi ProvinceJiangxi Agricultural UniversityNanchang 330045JiangxiChina College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China Scientific Observation and Experimental Station of Crop High-Efficiency Use of Water in Wuqiao Ministry of Agriculture and Rural AffairsWuqiao 061802HebeiChina Innovation Center of Agricultural Technology for Lowland Plain of Hebei Wuqiao 061802HebeiChina

Screening for agronomic traits associated with grain moisture is important for mechanical grainharvesting of maize. Cob color as a visual indicator has received limited attention, though it has been subjected to artificial selection, and may have some association with threshability. To investigate the relationships between cob color and grain moisture and other agronomic traits, field experiments were conducted during 2016–2017 using 23 commercial hybrids with red or white cobs. Kernels of red-cob hybrids dehydrated faster, showing lower moisture content at harvest than white-cob hybrids. A cob color index(CCI) was established as a quantitative measure of cob color in the hybrid panel. Ranging from0(whitest) to 17.98(reddest), CCI correlated well with grain dehydration and other agronomic traits associated with growth ontogeny, plant morphology, and plant N content. Strong selection of red cob for recently released hybrids suitable for mechanical grain-harvesting indirectly validated the observed link between cob color and grain dehydration. We propose that cob color and CCI could be used in future selection of maize cultivars bred for mechanical grain-harvesting.

关键词： Maize hybrids Cob color Grain dehydration agronomic traits Artificial selection

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QTL Analysis of Some agronomic traits in Rice Under Different Growing Environments

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Agricultural Sciences in China 2006年第1期5卷 15-22页

作者： HAN Long-zhi QIAO Yong-li ZHANG San-yuan CAO Gui-lan YE Chang-rong XU Fu-rong DAI Lu-yuan YeJong-doo Koh Hee-jong Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China School of Plant Science College of Agriculture and Life Science Seoul National University Seoul 151-921 Korea Institute of Rice Research Jilin Academy of Agricultural Sciences Gongzhuling 136100 P.R.China Institute of Biotechnology and Germplasm Research Yunnan Academy of Agricultural Sciences Kunming 650205 P.R.China National Crop Experiment Station Rural Development Administration Suwon 441-857 Korea

The culm length, panicle length, spikelets per panicle and panicle exsertion were evaluated by using F2：3 population including 200 lines derived from the cross of indica and japonica Milyang 23/Jileng 1 under five different environments of Beijing （natural normal growing environment）, Kunming （natural cold environment）, Gongzhuling of China （cold water irrigation） and Chuncheon of Korea （natural normal growing environment and cold water irrigation）, and QTLs of these traits were analyzed by using SSR markers. The results showed that 44 QTLs related to these agronomic traits were detected under five different growing environments, and these QTLs have been located on 11 chromosomes except chromosome 9. The QTLs for qCLla, qCL1b, qCL5a, qCL6b, qPLla, qPL3a, qPL6b, qPL6c, qPL7b, qSP8b, qSPlc, qSP11a, qSP12, and qPE1 have been detected under more than two growing environments, and those that were little affected by environments, were stable QTLs. Among them, qCLla, qCLlb, qPLla, qSPlc, and qPE1 explained 24.2-55.2%, 22.7-39.9%, 12.5-27.7%, 14.4-33.5%, and 26.6-28.7% of observed phynotypic variation, respectively, which were major genes mainly appearing as overdominance. These QTLs cause the increase in action to culm length, panicle length, spikelets per panicle, and panicle exsertion under cold environment, showing that these QTLs were correlated with cold tolerance.

关键词： rice different growing environments agronomic traits QTLs

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QTL Analysis of Major agronomic traits in Soybean

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Agricultural Sciences in China 2007年第4期6卷 399-405页

作者： CHEN Qing-shan ZHANG Zhong-chen LIU Chun-yan XIN Da-wei QIU Hong-mei SHAN Da-peng SHAN Cai-yun HU Guo-hua Soybean Research Institute Northeast Agricultural University Harbin 150030 P.R.China Land Reclamation Research ＆ Breeding Centre of Heilongjiang Harbin 150036 P.R.China

Soybean is a main crop, and most agronomic traits of soybean are quantitative; therefore, there is vely important studying and applying value to locating these traits. A F2：10 RIL population containing 154 lines, derived from the cross between Charleston as female and Dongnong 594 as male parent, were used in this experiment. A genetic linkage map was constructed with 164 SSR primers, which were screened with the two parents and amplified on the 154 lines. 12 agronomic traits different between the two parents were investigated, and QTLs of all the traits were analyzed using the software Windows QTL Cartographer V2.0. The agronomic traits included quality traits： protein content, oil content, and content of protein and oil; yield traits： pods per plant, seed weight per plant, and 100 seeds weight; and other agronomic traits： plant height, days to maturity, branches, nod number in main stem, average leaf length, and average leaf width. The results showed that 68 QTLs in total were found for the 12 agronomic traits. The number of QTLs per trait varied from 3 for the average leaf width to 11 for 100 seeds weight and plant height, and was 5.8 on average. Good accordance was seen in many QTLs between the results of this study and the results obtained by other similar studies; therefore, these QTLs may be valuable for molecular marker assistant selection in soybean. In this study, 68 major QTLs of 12 important traits of soybean were analyzed.

关键词： soybean agronomic traits QTL SSR

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Correlation Analysis on Main agronomic traits and Yield and Quality of Hybrid Cotton

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Agricultural Science & Technology 2013年第7期14卷 973-978页

作者：周利平周桃华张诗军安徽省枞阳县种植业管理局安徽枞阳246700 安徽农业大学农学院安徽合肥230036

ObjectiveThis study aimed to analyze the correlations of the main agronomic traits, yield and quality of hybrid cotton cultivars. MethodThe growth period, main agronomic traits, yield components, yield and quality of 13 hybrid cotton cultivars were compared, and the correlations of their main agronomic traits, yield components, yield and quality were analyzed. ResultThe growth period of the 13 cultivars was about 123 d, and all of them presented strong growth potential throughout the growth period. The ginned cotton yield shared an extremely significant positive correlation with the first fruiting branch position, plant height, number of fruiting branches, number of bolls per plant, number of bolls per hectare and seed cotton yield; the first fruiting branch position and micronaire value shared a significant positive correlation. Keza No.1 and Chunzamian No.1 had the lowest micronaire value, 4.5. The specific strength of all the cotton cultivars ranged from 27 cN/tex to 30 cN/tex, presenting significant difference. In addition, there was extremely significant difference in the ginned cotton yield among all the cotton cultivars. ConclusionThe study provides theoretical reference for the cultivation of high-yield hybrid cotton.

关键词： Cotton agronomic traits Yield Fiber quality

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Effects of Sowing Dates on Yield,agronomic traits and Resistance of Millet in Yan'an

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Agricultural Biotechnology 2016年第1期5卷 22-24页

作者： Fang HAN Qinghua YANG Hongan YUAN Yan'an Research Center of Minor Grain Crops Northwest Agriculture & Forestry University Yan'an Institute of Agricultural Sciences College of Agronomy Northwest Agriculture & Forestry University

[ Objective ] This study aimed to investigate the appropriate sowing dates of different millet varieties and analyzed the yield, agronomic traits and resist- ance of millet. [ Method ] Split-plot design was employed with sowing date and millet variety assigned to the main plot and sub-plot, respectively, to investigate the effects of sowing dates on yield, agronomic traits and resistance of millet. [ Result] The results showed that early or late sowing would lead to yield reduction. Changsheng 07, Jingu 36 and Changnong 35 exhibited higher yield. Based on the yield, agronomic traits and resistance, the appropriate sowing date of Changsheng 07, Jingu 40 and Jingu 36 was May 13 ; the appropriate sowing date of Yangu 13 and Changnong 35 was May 20. [ Conclusion] The most appropriate sowing date of millet in Yan＇an was May 10 to May 20. Key words Millet; Sowing date; Yield; agronomic traits ; Resistance

关键词： Millet Sowing date Yield agronomic traits Resistance

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Effects of Non-flooded Cultivation with Straw Mulching on Rice agronomic traits and Water Use Efficiency

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Rice science 2006年第1期13卷 59-66页

作者： QIN Jiang-tao HU Feng LI Hui-xin WANG Yi-ping HUANG Fa-quan HUANG Hua-xiang College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 China China National Rice Research Institute Hangzhou 310006 China Plantation of Dengjia Town Yujiang County Jiangxi Province Yujiang 335200 China

A field experiment was conducted to study water use efficiency and agronomic traits in rice cultivated in flooded soil and non-flooded soils with and without straw mulching. The total amount of water used by rice under flooded cultivation （FC） was 2.42 and 3.31 times as much as that by rice under the non-flooded cultivation with and without straw mulching, respectively. The average water seepage was 13 560 m^3/ha under the flooded cultivation, 4 750 m^3/ha under the non-flooded cultivation without straw mulching （ZM） and 4 680 m^3/ha under non-flooded cultivation with straw mulching （SM）. The evapotranspiration in the SM treatment was only 38.2% and 63.6% of the FC treatment and ZM treatment, respectively. Compared with the ZM treatment, straw mulching significantly increased leaf area per plant, main root length, gross root length and root dry weight per plant of rice. The highest grain yield under the SM treatment （6 747 kg/ha） was close to the rice cultivated in flooded soil （6 811.5 kg / ha）. However, the yield under the ZM treatment （4 716 kg/ha） was much lower than that under the FS treatment and SM treatment. The order of water use efficiency and irrigation water use efficiency were both as follows： SM〉 ZM〉 FC.

关键词： rice non-flooded cultivation straw mulching water use efficiency irrigation water use efficiency agronomic traits

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