Additive main effects and multiplicative interaction (AMMI) biplots for yield-related agricultural traits of O. sativa and O. glaberrima during ordinary cultivation in Korea (A). When O. sativa and O. glaberrima were clustered by PCA score, most test materials were clustered in the same group (B). Group B, which contained only O. sativa, had much more number of tillers and yield, and Group A, which contained only O. glaberrima, had long culm length, panicle length and high ratio of ripening grains, and 1000-grain weigth, grain width. HD: heading date, CL: culm length, PL: panicle length, NT: number of tillers, NS: number of spikelets, RRG: ratio of ripened grain, TGW: 1000-grain weight, YD: yield, GL: grain length, GW: grain width, GT: grain thickness.
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