Analysis of effects in wheat of high temperature on grain filling attributes estimated from mathematical models of grain filling
نویسندگان
چکیده
منابع مشابه
Effects of high NH+4 on K+ uptake, culm mechanical strength and grain filling in wheat
It is well established that a high external NH(+) 4 concentration depresses many processes in plant development, but the underlying mechanisms are still not well understood. To determine whether the negative effects of high levels of NH(+) 4 are related to competitive cation uptake, wheat was grown in a field with moderate (18 g N m(-2)) and high (30 g N m(-2)) supplies of NH(+) 4 in the presen...
متن کاملEvaluation of Wheat Chromosome Translocation Lines for High Temperature Stress Tolerance at Grain Filling Stage
High temperature (HT, heat) stress is detrimental to wheat (Triticum aestivum L.) production. Wild relatives of bread wheat may offer sources of HT stress tolerance genes because they grow in stressed habitats. Wheat chromosome translocation lines, produced by introgressing small segments of chromosome from wild relatives to bread wheat, were evaluated for tolerance to HT stress during the grai...
متن کاملHeat Stress in Wheat during Reproductive and Grain-Filling Phases
II. IMPACT OF TERMINAL HEAT STRESS ..................................................................................................................................................2 A. Photosynthesis .......................................................................................................................................................................................................
متن کاملCarpel size, grain filling, and morphology determine individual grain weight in wheat
Individual grain weight is a major yield component in wheat. To provide a comprehensive understanding of grain weight determination, the carpel size at anthesis, grain dry matter accumulation, grain water uptake and loss, grain morphological expansion, and final grain weight at different positions within spikelets were investigated in a recombinant inbred line mapping population of bread wheat ...
متن کاملGrain Filling Rate and Duration in Bread Wheat Under Irrigated and Drought Stressed Conditions
Abstract Eleven wheat cultivars were evaluated at 10-day intervals, beginning from anthesis, under irrigated and drought stress conditions during 2006-2007. The effects of irrigation, genotype and date of harvest were significant for most of the studied characters. Water deficit decreased pre-and post-anthesis assimilation rate, grain weight per spike, grain number per spike and 1000 grain wei...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Agricultural Science
سال: 2003
ISSN: 0021-8596,1469-5146
DOI: 10.1017/s0021859603003411