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Dwarfi ng apple rootstock responses to elevated temperatures: A study on plant physiological features and transcription level of related genes

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Journal of Integrative Agriculture 2016年第5期15卷 1025-1033页

作者： ZHOU Bei-bei SUN Jian LIU Song-zhong JIN Wan-mei ZHANG Qiang WEI Qin-ping Institute of Forestry & Pomology Beijing Academy of Agriculture & Forestry Sciences/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China) Ministry of Agriculture

The aim of this study was to investigate the impact of heat stress on physiological features, together with endogenous hormones and the transcription level of related genes, to estimate the heat resistance ability and stress injury mechanism of different dwarfing apple rootstocks. Among the six rootstocks, the rootstocks of native Shao series（SH series） showed better heat stress resistance than those of Budagovski 9（B9）, Cornell-Geneva 24（CG24）, and Malling 26（M26） from abroad. Among SH series rootstocks, SH1 and SH6 showed higher heat stress resistance than SH40. M26 demonstrated the lowest adaption ability to heat stress, showing higher leaf conductivity and lower liquid water content（LWC） with the increase in temperature. Heat stress also resulted in the suppression of photosynthesis, which showed no significant restoration after 7-day recovery. It should be noted that although a higher temperature led to a lower LWC and photosynthetic efficiency（P_n） of CG24, there was no significant increase in leaf conductivity, and 7 days after the treatment, the P_n of CG24 recovered. The extremely high temperature tolerance of SH series rootstocks could be related to the greater osmotic adjustment（OA）, which was reflected by smaller reductions in leaf relative water content（RWC） and higher turgor potentials and leaf gas exchange compared with the other rootstocks. Determination of hormones indicated multivariate regulation, and it is presumed that a relatively stable expression levels of functional genes under high-temperature stress is necessary for heat stress resistance of rootstocks.

关键词： dwarfing apple rootstock SH series rootstocks heat stress physiological features

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Effect of Removing the Lower Leaves on the physiological features and Aroma Constituents of Flue-Cured Tobacco

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Journal of Agricultural Science and Technology(B) 2014年第9期4卷 722-730页

作者： Jiang Hou Long Huang Fu Rao Ran Hui Wen Xu Chen Wang Dai Bin Yang Chao Wang Hong Feng Cheng Hai Tao Liu Guo Shun Chongqing Tobacco Science Research Institute Chongqing 400715 China Tobacco Leaf Branch of Chongqing Tobacco Corporation Chongqing 400023 China Tobacco College Agronomy Department of Henan Agricultural University National Tobacco Cultivation and Physiology andBiochemistry Research Centre Zhengzhou 450002 China

Yunyan 97 was selected as the raw material. The effects of removing different number （0, 2, 3 and 4） of lower leaves on root activity, chlorophyll content, physiological features and contents of neutral aroma constituents in the flue-cured tobacco were analyzed. The results showed that the removal of lower leaves could significantly increase the root activity, chlorophyll content, net photosynthetic rate （Pn） and transpiration rate （Tr）, and delay the photosynthetic functional decline. Such effects were the greatest in lower leaves, followed by middle leaves and upper leaves. Moreover, the degree of the effects increased with higher number of leaves removed. After She lower leaves were removed, the water use efficiency （WUE） of leaves in the first 10 d became higher with more leaves removed. In the later periods （24 d, 38 d）, WUE decreased with more leaves removed. For the middle and upper leaves, the removal of three leaves （T2） and two leaves （T1） resulted in the highest contents of aroma constituents, respectively. For the tobaccos cultured in soil with moderate fertility under the experimental conditions, the appropriate number of lower leaves removed should be 2-3.

关键词： physiological features aroma constituents flue-cured tobacco.

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Non-Invasive Early Diagnosis of Obstructive Lung Diseases Leveraging Machine Learning Algorithms

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Computers, Materials & Continua 2022年第9期72卷 5681-5697页

作者： Mujeeb Ur Rehman Maha Driss Abdukodir Khakimov Sohail Khalid Department of Electrical Engineering Riphah International UniversityIslamabad44000Pakistan Security Engineering Lab Prince Sultan UniversityRiyadh12435Saudi Arabia RIADI Laboratory National School of Computer ScienceUniversity of ManoubaManouba2010Tunisia Peoples’Friendship University of Russia(RUDN University) Moscow117198Russia

Lungs are a vital human body organ,and different Obstructive Lung Diseases(OLD)such as asthma,bronchitis,or lung cancer are caused by shortcomings within the ***,early diagnosis of OLD is crucial for such patients suffering from OLD since,after early diagnosis,breathing exercises and medical precautions can effectively improve their health state.A secure non-invasive early diagnosis of OLD is a primordial need,and in this context,digital image processing supported by Artificial Intelligence(AI)techniques is reliable and widely used in the medical field,especially for improving early disease ***,this article presents an AIbased non-invasive and secured diagnosis for OLD using physiological and iris *** research work implements different machine-learning-based techniques which classify various subjects,which are healthy and effective *** iris features include gray-level run-length matrix-based features,gray-level co-occurrence matrix,and statistical *** features are extracted from iris ***,ten different classifiers and voting techniques,including hard and soft voting,are implemented and tested,and their performances are evaluated using several parameters,which are precision,accuracy,specificity,F-score,and *** on the statistical analysis,it is concluded that the proposed approach offers promising techniques for the non-invasive early diagnosis of OLD with an accuracy of 97.6%.

关键词： Obstructive lung disease non-invasive diagnosis machine learning physiological features voting techniques

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Heredity,Reproductive and Adaptive Heterosis and Variability of Intraspecies Hybrids of *** L.

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棉花学报 2002年第S1期14卷 56-56页

作者： N.A.SAAKOVA S.M.NABIEW E.V.KHEGAY U.M.GANIEV Institute of Genetics and Experimental Biology of Plants Academy of Sciencesp/o Yukori-YuzKibraisky raionTashoblast 702151Uzbekistan

On the patterns of geographically remote *** *** hybrids produced byintraspecies hybridization of local and importedbreeds we have investigated particularities inheredity and variability of the most importanteconomical and physiological features,display ofreproductive and adaptive heterosis in different water supplement conditions.

关键词：陆地棉种杂种遗传繁殖适应性 intraspecies hybridization physiological features

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