检索结果-南通市图书馆

Developmental Genetics Analysis for Plant Height in indica hybrid rice Across Environments

rice science 2009年第2期16卷 111-118页

作者： PENG Tao ZHONG Bing-qiang LING Ying-hua YANG Zheng-lin ZHA Ren-ming XIE Rong LIU Cheng-yuan HE Guang-hua rice Research Institute/Key Laboratory of Biotechnology and Crop Quality Improvement Ministry of Agriculture Southwest University Chongqing 400716 China rice and Sorghum Research Institute Sichuan Academy of Agricultural Sciences Luzhou 646100 China Mianyang Agricultural Research Institute Mianyang 621023 China

The developmental genetics of plant height was analyzed from two groups of three-line indica hybrid rice at two environmental conditions based on the NCII design, using the additive-dominant developmental genetics models and the statistic methods. The results showed that the rice genotypes and environmental conditions could both affect plant height, and the effects of environment on plant height decreased gradually with plant development. Additive and dominant effects both governed the performance of plant height at all developmental stages. However, the degrees of effect varied among the rice genotypes. Moreover, the interaction between environments and genotypes also affected plant height. The genetic effects differed at most developmental stages. Furthermore, the expressJon of additive effect was more active than that of dominant effect. Conditional interaction effects with environment also influenced plant height during genetic development, especially at the eady stage. Mid-parent heterosis （HMP） increased gradually with the developmental stage of plant height, and maximized at the latest stage, whereas the heterosis over the better parent （HBP） showed small differences among the genotypes, and kept stable at the later stage, with positive numeric value. At most developmental stages, conditional HMP was positively significant, while conditional HBP was negatively significant. All above results suggest that HMP and HBP have some new expressions in all developmental periods and the levels and directions are quite different.

关键词： indica hybrid rice plant height developmental genetics heterosis environmental effect

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Analysis of Heterosis, Combining Ability and Heritability of Cadmium Content in Brown rice of Three-line indica hybrid rice

引用

Agricultural Science & Technology 2012年第11期13卷 2358-2362页

作者：游书梅曹应江蒋开锋郑家奎吴先军张涛杨莉杨乾华万先齐罗婧李昭祥四川省农科院水稻高粱研究所德阳618000 国家水稻改良中心泸州分中心四川泸州646100 农业部西南水稻生物学与遗传育种重点实验室四川德阳618000 重庆大学生物工程学院重庆400044 四川农业大学水稻研究所四川温江611130

Five cytoplasmic male sterile （CMS） lines were used as parents in an incomplete diallet cross and six restorer lines of rice design （Nc II design）. Thirty hybrid combinations with the same growth period were selected as experimental ma- terials to investigate the heterosis, combined ability and heredity of Cd content in brown rice of indica hybrid rice. According to the results, Cd content in brown rice showed a significantly negative heterosis; the general combining ability and specific combination ability of Cd content in CMS and restorer lines both reached extremely significant level （P〈0.01）, indicating that both genetic improvement of parents and e- valuation of combinations are important to the breeding of hybrid combinations with low accumulation of Cd; the broad-sense heritabitity and narrow-sense heritability of Cd content were both relatively high with slight differences, which respectively reached 97.73% and 80.10%, indicating that Cd content in brown rice mainly de- pends on the additive action of genes; in addition, parent improvement showed bet- ter effect on the selection of early generation.

关键词： indica hybrid rice Brown rice Cytoplasmic male sterile (CMS) line Re-storer line Cadmium Heterosis Combining ability Heritability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Correlation Analysis of Characters of indica hybrid rice with High Content of Amylose

引用

Agricultural Science & Technology 2013年第3期14卷 475-477页

作者：杨扬况浩池曾正明罗俊涛陈光珍何兴材付均四川省农业科学院水稻高粱研究所国家水稻改良中心四川泸州分中心农业部西南水稻分子生物学与遗传育种重点试验室四川泸州646100

[Objective] The aim was to research and analyze characters and related correlation of indica hybrid rice containing high amylose. [Method] In the research, major characters of 16 species of groups of {ndica hybrid rice and the correlation were explored in rice belts in Sichuan in 2011. [Result] The variation of chalkiness degree was the highest at 26.8%, followed by rate of head rice at 22.89%; varia- tions of head rice rate and chalkiness degree were lower at 0.72% and 2.61%. In addition, rate of unpolished rice was of significantly negative correlation with chalki- ness degree; rate of chalky rice was of extremely positive correlation with chalkiness degree and gel consistency; chalkiness degree was of significantly positive correla- tion with gel consistency; gel consistency was of significantly negative correlation with protein content; amylose content was of insignificant correlation with gel consis- tency （r=0.166 9） of the 16 hybrid groups. These indicated that gel consistency would be still high as the content of amylose grows （AC≥25%）. For example, when the content of anylose in Chuanxiang 29A/Luhui 37, Kangfeng AJ6684, and Lefeng A/SR536 exceeded 27%, the gel consistency was over 80 mm in the research. [Conclusion] The research provides references for improvement of amylose content in breeding hybrid rice.

关键词： Higher amylose content indica hybrid rice Characters Correlaiton analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Changes in Agronomic Traits of indica hybrid rice during Genetic Improvement

引用

Agricultural Science & Technology 2011年第8期12卷 1149-1152,1178页

作者：王丹英徐春梅袁江魏兴华廖西元章秀福中国水稻研究所浙江杭州310006 南京农业大学农业部南方作物生理生态重点开放实验室江苏南京210095

[Objective]The aim was to elucidate the changes of agronomical traits of indica hybrid rice during its genetic improvement.[Method]23 typical indica hybrid combinations cultivated in the middle and lower reaches of Yangtze River during the last 30 years were selected as experimental *** the hybrid rice combinations were grown in the same field;and then yield and morphological characters of single plant were compared;correlation and path analyses among agronomic characteristics were also conducted.[Result]During the 30 years of genetic improvement,the effective panicle number per plant was progressively decreased,which caused the decrease of grain yield and biomass per plant of hybrid rice combinations in spite of the slightly increased plant height,1 000-grain weight and number of grains per *** the transformation percentage of the matter in stem and sheath decreased after flowering,leave photosynthetic capacity after flowering was increased as panicle *** and path analysis showed that although both biomass per plant and number of grains per panicle were significantly correlated with grain yield per plant,biomass per plant acted as the key factor affecting yield per plant.[Conclusion]It was suggested that in rice high yield cultivation,panicle number was as important as large panicle,and tillering ability should not be neglected in breeding.

关键词： indica hybrid rice Genetic improvement Agronomic trait

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

indica rice restorer lines with large sink potential exhibit improved nutrient transportation to the panicle,which enhances both yield and nitrogen-use efficiency

引用

Journal of Integrative Agriculture 2021年第6期20卷 1438-1456页

作者： TIAN Qing-lan HE Lian-hua LIAO Shuang LI Wu DENG Fei ZHOU Wei ZHONG Xiao-yuan REN Wan-jun Key Laboratory of Crop Ecophysiology and Farming System in Southwest China/Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province/College of Agronomy Sichuan Agricultural UniversityChengdu 611130P.R.China Biotechnology Research Institute Guangxi Academy of Agricultural SciencesNanning 530007P.R.China

The yield and nitrogen use efficiency(NUE)of hybrid rice combinations are closely related to restorer ***,it is essential to evaluate the agronomic characteristics of restorer lines with high yield and high NUE(HYHN).However,it is unclear which restorer lines are HYHN,and neither have the common agronomic traits of the HYHN restorer lines been *** to address this issue,we conducted two filed experiments using three nitrogen applications,which screened five HYHN restorer lines from 15 indica restorer ***,NUE and nutrient transportation of restorer lines with different yields and NUE types were *** and total nitrogen absorption in aboveground biomass(TNA)increased,whereas NUE for grain production decreased with increasing nitrogen application *** HYHN restorer lines had large spikelets and high weight per panicle that were significantly positively correlated with yield and ***,large sink potential may be beneficial for both yield and *** further studied the differences in nutrient transportation to panicles between the HYHN and low yield and low NUE(LYLN)restorer lines and found that the former had a higher nitrogen absorption level and dry matter weight ratios of panicle in ***,the HYHN lines also had a higher root and neck-panicle node bleeding intensity per stem after heading and more developed vascular bundles of neck-panicle nodes and leaves than the LYLN lines,which could contribute to the transportation of nutrients from root to ground and from stem and leaf to ***,the advantages of large sink potential of the HYHN restorer lines include large nutrient accumulation in and distribution to the panicles and smooth flow of nutrients along the transportation channels.

关键词： indica hybrid rice restorer lines grain yield nitrogen-use efficiency sink potential nutrient transportation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comparative Analysis of Main Characters of New hybrid rice Combinations with Different Yield Levels

引用

Agricultural Science & Technology 2017年第12期18卷 2272-2275页

作者：潘典进罗冬玉罗文清李俊丽周家华王军民顿晓曦荆门市农业技术推广中心湖北荆门448000 荆门农业科学研究院湖北荆门448000

The main characters and yield of 22 new indica hybrid rice combinations were analyzed in order to sort out the common characteristics in the performance of main characters of high-yielding varieties （combinations）.The results showed at the confidence level of 95%, the whole growth pedod ranged from 131.3 to 137.3 d, the effective ear number ranged from 2 495 000 to 3 179 000 ears/hm2, the plant height was in the range of 119.5-131.7 cm, the average ear length ranged from 24.6 to 27.2 cm, the spikelet number per panicle was in the range of 164.2-225.4, the seed setting percentage ranged from 69.4% to 82.3%, and the 1 000-grain weight was in the range of 26.9-31.2 g. The correlation analysis between single traits and yield of rice varieties （combinations） showed that in order to achieve high yield, the medium indica hybrid rice variety with moderate growth period, higher plant height or biological yield, larger panicle and bigger kernel should be selected. In addition, the maximum tiller number should be controlled and adjust- ed, and the spike rate should be improved to ensure sufficient effective ears in the cultivation process.

关键词： indica hybrid rice Characters Yield Comparison

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：