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杂交水稻制种中不育系种子在开花时期,具有种子柱头外露率高和柱头残露率高的特点。从杂交种子柱头残露率上估算杂交水稻种子的真实性,是鉴定杂交水稻种子纯度中具有简单、方便,不受时间、地点等条件限制,有运用广泛的特点。一、材料与方法供试材料:杂交稻种有汕优6号、汕优63号、汕优64、协优6号、协优63、协优64、汕优桂33、威优64。不育系材料有
The male sterile lines of hybrid rice seeds have the characteristics of high stigma exsertion rate and high stigma dehiscence rate at the flowering stage. Estimating the authenticity of the hybrid rice seed from the rate of the stigma degeneration of the hybrid seeds is a simple and convenient method for identifying the purity of the hybrid rice seeds and has the characteristics of being widely used without limitation of time, place and the like. I. Materials and Methods The tested materials: hybrid rice varieties Shanyou 6, Shanyou 63, Shanyou 64, Xieyou 6, Xieyou 63, Xieyou 64, Shanyougui 33, Weiyou 64 CMS materials have