T×622A是美国近年来选育出的同属3197A细胞质类型的一个新不育系。经沈阳市农科所二年三个生育周期的观察鉴定,T×662A的综合性状较好,通过测配,初步认为是一个有希望代替3197A,可直接利用的不育系。 T×622A的生育日数在沈阳比3197A晚两天,株高136厘米,幼苗健壮,芽鞘绿色,拔节后叶片色泽暗绿,宽厚而肥大,蜡质叶脉,总叶片20～21片。花药干瘪,呈白色,不开裂,无花粉。柱头发达,不育性稳定,不育程度达99％以上,败育极轻。长穗,呈纺缍形,穗一级分枝7～8轮,分枝数60.1个,枝梗长而不散。单穗粒重平均64克,粒形近扁圆,硬壳, T × 622A is a new sterile line of the same 3197A cytoplasm type bred in the United States in recent years. The observation and identification of three birth cycles in Shenyang Agricultural Institute indicated that the comprehensive characters of T × 662A were better. Through the test, it was initially thought to be a hopeless alternative to 3197A, which could be used directly. T × 622A days of birth in Shenyang two days later than the 3197A, 136 cm tall, robust seedlings, bud sheath green, dark green after jointing leaves, generous and hypertrophy, waxy veins, the total leaves 20 to 21 tablets. Anthers shriveled, white, not cracking, no pollen. Developed stigma, sterility and stability, the degree of infertility up to 99%, abortion minimal. Long spike, was spinning 缍 shaped spike a branch of 7 to 8, the number of branches 60.1, branch stems long and not scattered. Single grain weight average 64 grams, nearly oblate grain, hard shell,