{"title":"普通和热胁迫条件下面包小麦新基因型(Triticum aestivum L.)的产量稳定性","authors":"K. Ibrahim, A. Said","doi":"10.21608/agro.2020.32118.1216","DOIUrl":null,"url":null,"abstract":"FORTY-TWO bread wheat genotypes (Triticum aestivum L.) were evaluated in eight environments in Egypt: two locations and two planting dates during the two 2016-2017 and 2017-2018 growing seasons. The objectives of this study were to estimate grain yield, number of spikes plant-1, 1000-kernel weight and plant height of these 42 bread wheat genotypes under different environments and to determine their stabilities. Combined analysis shows that most mean squares was attributed to environmental effects, indicating that environments were diverse, with large differences among environmental means causing most of variation in grain yield and the other studied traits. Mean squares due to genotypes were highly significant for grain yield and the other traits, indicating that the existence of inherent genetic variability and point to the possibility of selecting a stable wheat genotypes .Mean squares due to Geno x Env were highly significant for all studied traits, indicating that there are substantial differences in genotypic response across environments. Mean squares due to genotypes were significant for all studied traits. Mean squares of E+ (GxE) were highly significant for all studied traits. Linear components of genotype-environment interaction were significant or highly significant for all studied traits. The highest-yielding genotypes overall environment were G21 (360.25g), G15 (349.52g) and G13 (303.96g) and did not differ significantly from check variety Giza-168 (341.76g). Six genotypes namely, G13, G21, Giza-168 Shand-1, misr-1 and Sahel-1 showed better general adaptability across environments.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2020-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Grain Yield Stability of New Bread Wheat Genotypes ( Triticum aestivum L.) under Normal and Heat Stress Conditions\",\"authors\":\"K. Ibrahim, A. Said\",\"doi\":\"10.21608/agro.2020.32118.1216\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"FORTY-TWO bread wheat genotypes (Triticum aestivum L.) were evaluated in eight environments in Egypt: two locations and two planting dates during the two 2016-2017 and 2017-2018 growing seasons. The objectives of this study were to estimate grain yield, number of spikes plant-1, 1000-kernel weight and plant height of these 42 bread wheat genotypes under different environments and to determine their stabilities. Combined analysis shows that most mean squares was attributed to environmental effects, indicating that environments were diverse, with large differences among environmental means causing most of variation in grain yield and the other studied traits. Mean squares due to genotypes were highly significant for grain yield and the other traits, indicating that the existence of inherent genetic variability and point to the possibility of selecting a stable wheat genotypes .Mean squares due to Geno x Env were highly significant for all studied traits, indicating that there are substantial differences in genotypic response across environments. Mean squares due to genotypes were significant for all studied traits. Mean squares of E+ (GxE) were highly significant for all studied traits. Linear components of genotype-environment interaction were significant or highly significant for all studied traits. The highest-yielding genotypes overall environment were G21 (360.25g), G15 (349.52g) and G13 (303.96g) and did not differ significantly from check variety Giza-168 (341.76g). Six genotypes namely, G13, G21, Giza-168 Shand-1, misr-1 and Sahel-1 showed better general adaptability across environments.\",\"PeriodicalId\":42226,\"journal\":{\"name\":\"Egyptian Journal of Agronomy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2020-07-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Egyptian Journal of Agronomy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21608/agro.2020.32118.1216\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Egyptian Journal of Agronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21608/agro.2020.32118.1216","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 4
摘要
在2016-2017和2017-2018两个生长季节,在埃及的八个环境中评估了42种面包小麦基因型(小麦):两个地点和两个种植日期。本研究的目的是估计这42个面包小麦基因型在不同环境下的产量、穗数、株高、1000粒重和株高,并确定其稳定性。综合分析表明,大多数均方归因于环境效应,表明环境是多样的,环境手段之间的巨大差异导致了粮食产量和其他研究性状的大部分变化。基因型的均方对粮食产量和其他性状具有高度显著性,表明存在固有的遗传变异,并表明有可能选择稳定的小麦基因型。Geno x Env的均方对于所有研究的性状都具有高度显著意义,表明不同环境下的基因型反应存在显著差异。基因型的均方对于所有研究的性状都是显著的。E+(GxE)的均方对所有研究的性状都非常显著。基因型-环境相互作用的线性成分对所有研究的性状都是显著或高度显著的。总环境产量最高的基因型是G21(360.25g)、G15(349.52g)和G13(303.96g),与对照品种Giza-168(341.76g)没有显著差异。
Grain Yield Stability of New Bread Wheat Genotypes ( Triticum aestivum L.) under Normal and Heat Stress Conditions
FORTY-TWO bread wheat genotypes (Triticum aestivum L.) were evaluated in eight environments in Egypt: two locations and two planting dates during the two 2016-2017 and 2017-2018 growing seasons. The objectives of this study were to estimate grain yield, number of spikes plant-1, 1000-kernel weight and plant height of these 42 bread wheat genotypes under different environments and to determine their stabilities. Combined analysis shows that most mean squares was attributed to environmental effects, indicating that environments were diverse, with large differences among environmental means causing most of variation in grain yield and the other studied traits. Mean squares due to genotypes were highly significant for grain yield and the other traits, indicating that the existence of inherent genetic variability and point to the possibility of selecting a stable wheat genotypes .Mean squares due to Geno x Env were highly significant for all studied traits, indicating that there are substantial differences in genotypic response across environments. Mean squares due to genotypes were significant for all studied traits. Mean squares of E+ (GxE) were highly significant for all studied traits. Linear components of genotype-environment interaction were significant or highly significant for all studied traits. The highest-yielding genotypes overall environment were G21 (360.25g), G15 (349.52g) and G13 (303.96g) and did not differ significantly from check variety Giza-168 (341.76g). Six genotypes namely, G13, G21, Giza-168 Shand-1, misr-1 and Sahel-1 showed better general adaptability across environments.