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Position: Home > Articles > A STUDY ON THE HERITABILITY OF CHARACTERISTICS OF LATE SHIEN RICE AND THEIR CORRELATION Journal of South China Agricultural University 1980 (4) 97-106

晚籼稻品种主要性状的遗传力和相互关系的研究

作者：

曾世雄;何泽佳

单位：

华南农学院农学系

摘要：

研究表明:晚籼稻各性状的广义遗传力,均以个体估算的比小区平均值估算的为低。其中,总的趋势是株高、抽穗日数、百粒重的遗传力较高;穗长、剑叶张角、每穗实粒数居中;结实率、着粒密度、每株穗数较低;单株产量最低。在单株产量的三个直接构成性状中,以每株穗数和每穗实粒数对它的影响最大,百粒重的影响最小。在穗长、着粒密度、剑叶张角等三个与单株产量有较密切遗传相关的性状中,以着粒密度对它的影响最大;次为剑叶张角;穗长的影响极小。对着粒密度的正向选择或对剑叶张角的反向选择均有助于间接提高单株产量。选育矮秆立叶型品种有利于提高水稻的有效生产能力。

译名：

A STUDY ON THE HERITABILITY OF CHARACTERISTICS OF LATE SHIEN RICE AND THEIR CORRELATION

作者：

Zeng Shixiong He ZejiaAB (Department of Agronomy, South China Agricultural College)

摘要：

Our observations indicate that the heritability of different characteristics studied of late Shien rice in a broad sense is lower when estimated individually than when estimated by means of mean value of plots. However, there was a main tendency that the heritability of plant height, days of heading and 100-grain weight, were comparatively higher; panicle length, sword leaf angle and filled grains per panicle were in the middle; percentage of filled grains, panicle density and panicles per plant were the lowest; and yield per plant was the lowermost. Panicles per plant and filled grains per panicle had the greatest effect from among the three direct contributing characteristics that formed the yield per plant, the remaining 100-grain weight imparted the smallest effect. Among the three heritable characteristics, panicle length, panicle density and the sword leaf angle, which had quite intimate corelation with the yield per plant, panicle density imparted the greatest influence, followed by leaf angle, panicle length being the least . Through selecting either positively on panicle density or negatively on leaf angle increased yield per plant could be indirectly achieved. To breed varieties with short stature aad erect leaves is an effective way to increase rice production.

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晚籼稻品种主要性状的遗传力和相互关系的研究

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