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本文分析了国际水稻所种质库中大粒资源的类型,来源及粒重与其它农艺性状的相关。利用电子计算机检索出的905份大粒材料(粒重在36克以上)中,籼型396份,粳型82份,爪哇型387份,杂交后代40份。占基因库中总份数2.15%。籼型和爪哇型主要来自亚洲国家,其中以老挝最多,粳稻以巴西和意大利居多。从粒重与14个性状的相关分析表明,粒重与株高、分蘖数、穗长、穗型、生育期均呈弱负相关,与直链淀粉含量呈负相关,而与胶稠度呈弱正相关。
In this paper, the types, sources and grain weight of large grain resources in the rice germplasm were analyzed in correlation with other agronomic traits. Among 905 large grain materials (grain weight more than 36 g) retrieved by computer, 396 indica varieties, 82 japonica varieties, 387 Java varieties and 40 hybrids were obtained. Accounting for 2.15% of the total number of gene pool. Indica and Javanese type mainly from Asian countries, of which the largest in Laos, Japonica rice in Brazil and Italy are mostly. Correlation analysis of grain weight and 14 traits showed that grain weight had a weak negative correlation with plant height, tiller number, panicle length, panicle type and growth period, negative correlation with amylose content, but weak correlation with gel consistency Positive correlation.