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Combined Drought and Heat Stress in Rice: Responses, Phenotyping and Strategies to Improve Tolerance 被引量:1
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作者 Maria Vera Jesus DA COSTA Yamunarani ramegowda +3 位作者 venkategowda ramegowda Nataraja N.KARABA Sheshshayee M.SREEMAN Makarla UDAYAKUMAR 《Rice science》 SCIE CSCD 2021年第3期233-242,共10页
Simultaneous occurrence of drought and heat stress will have significant negative impact on rice yield,especially under upland conditions.The projected increase in global temperatures and reduced precipitation will in... Simultaneous occurrence of drought and heat stress will have significant negative impact on rice yield,especially under upland conditions.The projected increase in global temperatures and reduced precipitation will increase the frequency of occurrence and intensity of these stresses,threatening rice production.Despite recognizing the importance of combined stress in rice,the knowledge generated in this area is very limited.Though complex,understanding combined stress tolerance of rice under water saving cultivation is more critical towards development of climate resilient rice cultivars.Here,we summarized the effects of combined stress on rice physiology with more emphasis on reproductive stage.Omics responses,phenotyping and physiology challenges and potential strategies for improving combined stress tolerance in rice are also discussed. 展开更多
关键词 RICE drought stress heat stress combined stress FLOWERING grain filling omics response PHENOTYPING genetic enhancement
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Genetic diversity for grain Zn concentration in finger millet genotypes:Potential for improving human Zn nutrition 被引量:1
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作者 ramegowda Yamunarani Geetha Govind +2 位作者 venkategowda ramegowda Harshavardhan Vokkaliga Thammegowda Shankar Ambarahalli Guligowda 《The Crop Journal》 SCIE CAS CSCD 2016年第3期229-234,共6页
Nearly half of the world population suffers from micronutrient malnutrition,particularly Zn deficiency.It is important to understand genetic variation for uptake and translocation behaviors of Zn in relevant crop spec... Nearly half of the world population suffers from micronutrient malnutrition,particularly Zn deficiency.It is important to understand genetic variation for uptake and translocation behaviors of Zn in relevant crop species to increase Zn concentration in edible parts.In the present study,genetic variation in grain Zn concentration of 319 finger millet genotypes was assessed.Large genetic variation was found among the genotypes,with concentrations ranging from 10 to 86 μg g^(-1)grain.Uptake and translocation studies with Zn/^(65) Zn application in 12 selected low-Zn genotypes showed wide variation in root uptake and shoot translocation,with genotypes GEC331 and GEC164 showing greater uptake and translocation.Genotypes GEC164 and GEC543 showed increased grain Zn concentration.Genotypes GEC331 and GEC164 also showed improved yield under Zn treatment.Appreciable variation in grain Zn concentration among finger millet genotypes found in this study offers opportunities to improve Zn nutrition through breeding. 展开更多
关键词 Finger MILLET Genetic variation HUMAN nutrition MICRONUTRIENT Zinc
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