早熟Iodent种质改良旅大红骨适宜机械粒收相关性状配合力及杂种优势分析
利用早熟Iodent改良旅大红骨种质资源,采用NCⅡ遗传交配设计,以改良后代及配制的杂交组合为试验试材,对宜机收关键性状进行配合力和杂种优势分析。结果表明,Iodent改良丹598和丹黄34机收综合性状表现优良,且与PH6WC配合力最高,形成强优势组合,是适宜机收的杂交组合。籽粒含水量与籽粒破损率极显著正相关,是限制粒收的关键性状。相关性分析表明,籽粒含水量、倒伏率、生育期、果穗行数、茎腐率与机收籽粒破损率显著正相关,机收品种的选育过程中应注意关键性状的选择,提高育种效率。
英文摘要:
Early maturing Iodent was used to improve Lvdahonggu germplasm resources, Using NCⅡ genetic mating design, Improve offspring and Hybrid combination were used as the test material to study the combing ability and heterosis of key traits in suitable machines. The results showed that Iodent improved Dan 598 and Dan Huang 34 had better comprehensive harvesting traits, and the highest combination with PH6WC, forming a strong dominant combination, which was a suitable hybrid combination for mechanical harvesting. The grain water content is extremely positively correlated with the breakage rate of the grains, which is a key trait that limits grain yield. Correlation analysis showed that the grain moisture content, lodging rate, growth period, number of ears, and stem rot rate have a significant positive correlation between the damage rates of harvested kernels, which is the key characters should be selected during breeding to improve breeding efficiency.
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