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Combining ability analysis for physiological traits in rice

机译:水稻生理性状的配合力分析

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Forty two hybrids and seven parents were tested for combining ability of grain yield and physiological characters viz., plant height, leaf temperature, transpiration rate, stomatal conductance, flag leaf area, leaf area index (LAI), panicles per plant, dry matter production, harvest index (HI) and filled grains per panicle. Among the parents, CO 43 was the best general combiner for leaf temperature, flag leaf area, dry matter production and harvest index. The hybrid IR 20/ACM 44 was the best specific combiner for transpiration rate, stomatal conductance, flag leaf area, dry matter production and harvest index. The hybrid IR 20/ACM 44 was the best specific combiner for transpiration rate, stomatal conductance, flag leaf area, leaf area index, dry matter production and filled grains/panicle. Eight combinations viz., ASD 16/IR 50, CO 43/IR 50, CO 43/ADT 36, CO 43/ACM 44, MDU 4/IR 50, MDU 4/ACM 44, IR 20/ADT 36 and IR 20/ACM 44 were regarded as the best combiners for more than one character besides grain yield.
机译:测试了42个杂种和7个亲本的谷物产量和生理特性的组合能力,即植物高度,叶温度,蒸腾速率,气孔导度,旗叶面积,叶面积指数(LAI),单株穗数,干物质产量,收获指数(HI)和每穗填充的谷粒。在亲本中,CO 43是叶片温度,旗叶面积,干物质产量和收获指数的最佳综合组合剂。杂交IR 20 / ACM 44是蒸腾速率,气孔导度,旗叶面积,干物质产量和收获指数的最佳特异性组合剂。杂交IR 20 / ACM 44是蒸腾速率,气孔导度,旗叶面积,叶面积指数,干物质产量和籽粒/穗粒填充率最佳的最佳组合剂。八个组合,即ASD 16 / IR 50,CO 43 / IR 50,CO 43 / ADT 36,CO 43 / ACM 44,MDU 4 / IR 50,MDU 4 / ACM 44,IR 20 / ADT 36和IR 20 /除了谷物产量以外,ACM 44还被认为是超过一个字符的最佳组合器。

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