冀棉21(邯78—91)由邯郸市农业科学研究所夏棉育种组从自育夏播低酚棉邯78中系选育成。自1991年至1993年相继参加了省预试、区试和生产试验,三年试验结果均获第一。1994年3月经河北省品种审定委员会预审通过,1996年4月通过决审,定名为冀棉21。 一、特征。本品种为低酚棉,种子小充实饱满,出苗好,苗齐苗壮,发育快,长势好,根系发达。植株较高呈筒形,茎秆较壮,果枝上举,着生节位较低,5—6片真叶时现蕾,营养枝较少。叶片中等大、呈绿色。结铃性强,铃卵园形,铃壳薄、成熟早、吐絮畅而集中,高抗枯萎耐黄萎,铃重4.5克,子指9.4克,衣分较高为36.7％。 Ji cotton 21 (Handan 78-91) by the Handan City Institute of Agricultural Sciences summer cotton breeding group from self-sowing low-density cotton Han Hand 78 bred. From 1991 to 1993 have participated in the provincial pre-test, district test and production test, the results of three years were the first. In March 1994, it was pre-approved by Hebei Province Variety Approval Committee and passed the resolution in April 1996, and named as Jimian 21. First, the characteristics. The varieties of low phenol cotton, full and full of small seeds, good emergence, Miao Qi Miao Zhuang, rapid development, good growth, root system developed. Higher plants were cylindrical, stalks stronger, fruiting branches on the move, lower birth position, 5-6 true leaves when budding, nutrition, fewer branches. The leaves are medium-sized and green. The bolls are bell-shaped, the bell-shell is thin, the maturation is early, the boll is smooth and concentrated, and the resistance to wilt is high. The boll weight is 4.5 g, the index is 9.4 g and the higher is 36.7%.