국문 초록
영문 초록
The cultivated area of glutinous rice in the Homan Plain of Korea is increasing to diversify the cropping system. Depending onthe time of transplanting, glutinous rice can be divided into early, ordinary, and late cultivation. Eight glutinous rice cultivars (Baegseolchal,Baekogchal, Boramchal, Boseogchal, Dongjinchal, JJ644wx, Nunbora, and Sinseonchal) were used to evaluate yield, pasting properties, andtexture according to cultivation time and to analyze the genotype-environment relationship. There were nine yield-related, six pasting-related,and four texture-related traits studied. Heading date and culm length were shortened as cultivation time increased, while panicle length, numberof spikelets, and 1,000-grain weight increased. Furthermore, late cultivation time also reduced pasting properties, peak viscosity, trough viscosity,and final viscosity. Hardness and adhesiveness among the texture properties increased with cultivation time, but stickiness decreased. Thevariation in 1,000-grain weight is mostly dominated by genotype, whereas heading date and yield are heavily influenced by environmentalfactors. All pasting property characteristics varied with environment changes, and genotype variation was dominant for all texture properties. Boramchal yielded the most in early and ordinary cultivation and Sinseonchal, together with Boramchal, yielded the most in late cultivation. Cultivars with excellent grain quality were Sinseonchal in early cultivation and Baegseolchal and Baekogchal in ordinary and late cultivation. A comparative analysis of characteristics based on cultivation time can assist in the selection of glutinous rice suitable for the Honam Plainand in the breeding of cultivars with improved yield and excellent grain quality.
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