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1 不育系K17A特征特性 K17A 5月1日播种,7月10日始穗,播始历期71天,主茎叶片数12叶,;株高70cm左右,株型紧凑,分蘖力较弱;叶片窄,略外卷,剑叶短挺,叶色浓绿,叶鞘紫色;穗长16cm左右,每穗粒数98粒左右,谷粒偏长,有短芒,稃尖紫色,谷壳薄,千粒重27g左右。K17A不育系的花时比珍汕97A早半个多小时,一般在上午10点左右开花,柱头外露率高,达90%左右,双外露率70%上下。柱头粗壮发达,呈紫色。包颈程度轻,对“九二○”较敏感,抽穗授粉期稻穗直立,穗层整齐,具有良好的异交结实性能。
1 CMS line K17A characteristics K17A sown on May 1, July 10 start ear, the start of the 71 days duration, the main stem leaves 12 leaves; plant height of about 70cm, compact plant type, weaker tillering ability ; Leaf blade narrow, slightly curled, short blade, leaf color dark green, leaf sheath purple; spike length 16cm or so, about 98 grains per spike, , Thousand grain weight 27g or so. K17A CMS spent more than half an hour earlier than the 97A Zhenshan 97A, generally flowering at about 10 am, with a high stigma exsertion rate of about 90% and a double exposure rate of 70%. Stigma stout, purple. The degree of package neck is light, and it is more sensitive to “920”, while the ear of rice is erect and the panicle is neat, with good outcrossing and fruiting performance.