一、“寒优1027”亲本特性 1.母本“寒丰A”不育系是上海市农科院作物所用BT型“农进2号”不育系与中熟晚粳“寒丰”杂交,并连续回交转育而成。株高90cm左右,叶短而挺,耐肥抗倒,主茎叶片17±1张。分蘖力中等,单株有效穗7～9个,抽穗整齐,花时集中。育性稳定配合力强,可恢复性好,异交结实率高。每穗总粒数 First, the “Han You 1027” characteristics of the parent 1. Female parent “Hanfeng A” CMS is a crop of Shanghai Academy of Agricultural Sciences BT type “Nongjin 2” sterile line and late maturing japonica “Hanfeng” hybrid , And a continuous back exchange. Plant height of about 90cm, short leaves and Tingzhi, resistant to lodging, the main stem leaves 17 ± 1. Medium tillering ability, effective spike per plant 7 to 9, heading and tidy, time-focused. Fertility and stability with strong ability to recoverability, outcrossing high rate. Total grains per panicle