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首页> 外文期刊>Chinese science bulletin >Correlation analysis and QTL identification for canopy temperature, leaf water potential and spikelet fertility in rice under contrasting moisture regimes
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Correlation analysis and QTL identification for canopy temperature, leaf water potential and spikelet fertility in rice under contrasting moisture regimes

机译：不同水分条件下水稻冠层温度，叶片水势和小穗繁殖力的相关分析和QTL鉴定

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摘要

Canopy temperature (CT), leaf water potential (LWP) and spikelet fertility (SF) of a set of RILs (F9) from (be cross between Zhenshan97B and IRAT109 were investigated under two soil moisture regimes in a drought screen facility. In water stress condition, CT was negatively correlated with SF (r = -0.2867) and LWP (r = -0.2740), and LWP was positively associated with SF (r = 0.1696), These results indicated that the plant with high drought tolerant ability could maintain higher LWP and lower CT, leading to higher SF. A total of 44 main effect QTLs were associated with CT, LWP and SF. The accumulated contributions of QTLs for CT, LWP and SF were 87.85 percent, 15.06 percent, 79.46 percent under well water condition and 72.61 percent, 87.68 percent, 33.29 percent under stress condition, respectively. Totally 45 pairs of digenic interactions were detected. The accumulated contribution of digenic epistasis on CT, LWP and SF were 55.69 percent, 47.15 percent, 48.15 percent mider well water condition and 53.44 percent, 57.94 percent, 54.62 percent under water stress condition. Compared with other drought tolerance QTL mapping researches in rice, 19 main effect QTLs were found to be located at the same or closely conjoint regions.
机译：在干旱筛选条件下，在两种土壤水分条件下，对（来自镇山97B和IRAT109之间的）RIL（F9）的一组RIL（F9）的冠层温度（CT），叶水势（LWP）和小穗育性（SF）进行了研究。结果表明，CT与SF（r = -0.2867）和LWP（r = -0.2740）呈负相关，而LWP与SF（r = 0.1696）呈正相关，这些结果表明高耐旱能力的植物可以保持较高的抗旱性。 LWP和较低的CT，导致SF升高;在井水条件下，与CT，LWP和SF相关的主要效应QTL共有44个，对CT，LWP和SF的QTL累积贡献为87.85％，15.06％，79.46％。在压力条件下，分别发现了72对双基因相互作用，分别为72.61％，87.68％，33.29％，双基因上位对CT，LWP和SF的累积贡献分别为55.69％，47.15％，48.15％。水分胁迫条件下的平均水平分别为53.44％，57.94％，54.62％。与水稻其他耐旱性QTL作图研究相比，发现19个主要效应QTL位于相同或紧密结合的区域。

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