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对高粱进行遗传相关及选择指数分析,确定了二级枝梗数+二级枝梗粒数+三级枝梗数+抽穗期脯氨酸含量构成的选择指数,遗传进度有显著增加,是旱地高粱育种应采用的较为理想的选择方案。同时通过对不同品种、不同时期、不同环境条件下,叶片内脯氨酸含量的分析结果表明:水分胁迫处理刺激脯氨酸积累的差异,因而可把脯氨酸含量在缺水植株中的增加,作为一种抗旱标志或抗旱机制来考虑。
The genetic correlation and selection index of sorghum were analyzed to determine the selection index of secondary branch number + secondary branch branch number + tertiary branch number + proline content at heading stage, and the genetic progress was significantly increased, which was the result of sorghum breeding in dryland Should be used in the more ideal choice. At the same time, the analysis of proline content in leaves under different varieties, different periods and different environmental conditions showed that the differences of proline accumulation stimulated by water stress treatment could increase the content of proline in water-deficient plants , As a sign of drought or drought resistance mechanism to consider.