heritability study of important bread wheat agronomic traits under drought stress condition using generation mean analysis of roushan×kavir cross
نویسندگان
چکیده
due to cereal are affected by drought stress in their lifetime. in order to study gene action of bread wheat under drought stress condition, a generation mean analysis was performed using f1, f2 and f3 generations derived from roushan and kavir. generation mean analysis was performed based on joint scaling test. genetic parameters including additive effect (d), dominance effect (h), additive×additive epistatic effect [i] and dominance×dominance effect [l] were calculated for number of tillers, plant height, awn length, spike length, peduncle length, grain number per spike, grain number per plant, flag leaf length and grain yield. dominance effect was more important than additive for most of evaluated traits, therefore, for these traits selection should be made in later generations till desirable genes are fixed. furthermore, additive×additive epistasis effect, [i], was more important than dominant×dominant effect, [l]. broad sense heritability for evaluated traits ranged 0.52 to 0.95. while it was ranged 0.32 to 0.76 for narrow sense heritability. positive heterosis was observed for all traits. selection in later generation in the segregating populations can be effective to improve yield under drought stress condition.
منابع مشابه
Genetic analysis of agronomic and physiological traits of bread wheat (Triticum aestivum L.) using generation mean analysis under drought stress conditions and spring planting in the cold climate
Study of heritability and gene action to improve agronomic and physiological traits, especially under drought stress conditions, are very important. The objectives of this study were to investigate heritability for important agronomic traits and some physiological characters in a cross between two spring wheat cultivars. The experiment was carried out using different generations (BC1, BC2, F3, ...
متن کاملGenetic Study of Grain Yield and its Components in Bread Wheat Using Generation Mean Analysis under Water Stress Condition
Abstract In order to study the inheritance of grain yield and its components in bread wheat, two cultivars, Karchyya(drought and salinity tolerant) and Gaspard (sensitive to drought and salinity stress) were crossed.Parents together with F1, F2, F3, BC1and BC2 generations were evaluated using a randomized complete block design with three replications in 2008-2009 growing season.Grain weight per...
متن کاملGenetic analysis of traits related to grain yield in wheat under drought stress condition by generation mean analysis
In order to study the inheritance of some traits related to grain yield in drought stress conditions in bread wheat (Triticum aestivum L.), F2, F3 and F4 generations derived from a Kharchia (tolerant) × Gaspard (susceptible) cross and their parents were used separately in a complete randomized block design with two replications. Stem length, biological yield, main spike straw weight, total spik...
متن کاملEstimation of Genetic Components and Inheritance of Bread Wheat Agronomic Traits Using Regression Method Through Generation Mean Analysis
Studying the genetic structure of crops, including wheat, has always been one of the research priorities to increase the efficiency of breeding methods. In order to genetic analysis of some agronomic traits of bread wheat using generation mean analysis (GMA), all produced generations along with relevant parents of the two populations (Marvdasht × Rasoul and Marvdasht × Shahpasand) were evaluate...
متن کاملGenetic Analysis and QTLs Identification of Some Agronomic Traits in Bread Wheat (Triticum aestivum L.) under Drought Stress
In order to study the genetic conditions of some agronomic traits in wheat, a cross was made between Gaspard and Kharchia varieties. F2, F3 and F4 progenies with parents were evaluated under drought conditions. Three-parameter model [m d h] considered as the best fit for number of fertile tiller and flag leaf length using generations mean analysis method. For number of grain per spike and main ...
متن کاملGenetic analysis of agronomic and morphological traits of durum wheat [Triticum turgidum L. spp. durum (Desf.)] using generations mean analysis under non-stress and terminal drought stress conditions
Breeders often use generation means analysis to obtain information about inheritance, gene action, and to determine effective breeding methods to improve important agronomic traits, especially under drought stress conditions. To investigate the genetic parameters of agronomic and morphological traits in durum wheat, a field experiment was carried out using F1, F2, BC1 and BC2 generations obtain...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
علوم گیاهان زراعی ایرانجلد ۴۷، شماره ۳، صفحات ۴۵۱-۴۶۲
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023