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以一组小麦区域试验资料为例,介绍了分析方法。1.一种基于对照和参试品种间的成对GE互作均方(MS_(GE))的分析。2.优度估计。品种×环境资料的品种总优度值定义为全部环境中平均的品种响应值与最大响应值的距离均方。这个分析可以给予育种者选择地区适应的品种作为对照以较大的灵活性。 相似文献
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Breeding for tolerance to soybean rust is potentially one of the solutions to combating soybean rust; however, very little progress in tolerance breeding has been documented. Fourteen pre-selected genotypes were evaluated in a sprayed versus unsprayed split-plot trial conducted over three seasons for their tolerance to soybean rust. Different assessments of tolerance were compared for their effectiveness in discriminating between genotypes. Conventional methodology using a yield loss % index for assessing tolerance produced results which were poorly correlated with each other over seasons, which likely accounts for the historic lack of breeding success. This study has used the superiority measure (Pi) of Lin and Binns and the ecovalence statistic (Wi) of Wricke in a biplot to identify the most tolerant genotypes. A novel statistic (WiPi) has been generated from this biplot which facilitates the simultaneous selection for general performance and yield stability of genotypes under a range of rust stress conditions. 相似文献
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果蔬盆景作为新兴产业发展迅速,本文阐述了果蔬盆景的发展现状、特点,分析了果蔬盆景产业化发展的优势,并根据我省发展状况提出了建议。 相似文献
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“希望之光”人才培养计划是落实科教兴川、帮助民族地区和边远山区培训人才,提高科技水平、发展区域经济的综合工程。将该工程很好地与家庭牧场优化模式研究示范相结合,为民族地区、边远山区培养科研骨干队伍,推动三州的经济、科技和畜牧业发展。 相似文献