新型细胞质雄性不育系A3 SX-1A的创制与饲草高梁晋草1号的选育

利用A3细胞质抗败育和中国高粱根茎长及亨加利高粱株高杂种优势强的特点，育成了抗败育、长根茎、抗旱耐深播A3 SX-1A。用该系与苏丹草杂交育成饲草高粱晋草1号，山西省区试结果表明：晋草1号在两年13个点次中全部增产，二次刈割平均产鲜草150792Kg／hm^2，比对照增产10．8％，该草长势强，根系发达，分蘖性好，抗紫斑病、抗旱、抗倒伏、刈割后植株再生力强、生长速度快，是农田刈割草地的优良品种。晋草1号植株含粗蛋白15．29％（以干基计），粗脂肪2．96％，无氮抽出物32．29％。成熟期茎秆含糖20^0（BX）左右，是青刈、音贮饲兼牛、羊、鱼的优质饲料。

Release of New Cytoplasmic Male Sterility Line A3 SX-1A and Forage Sorghum Jincao 1

Anti-abortion, long mesoclimate and drought resistant sorghum （sorghum bicolor （L.） Moench） CMS A3 SX-1A was selected, which took advantage of the characters of anti-abortion of A3, long mesoclimate of Gao Liang and plant height heterosis of Hegari. And then forage sorghum Jincao 1 derived from A3SX-1A and Sudanese IS722 （sorghum Sudanese （Piper） stapt）. In two-year regional experiments in Shanxi province, the average yield of Jincao 1 was 1150 792kg/hm^2, it increased 10.8% than CK. Jincao 1 also have the characters such as fast growth, flourishing roots, tillers, better leaf disease resistance, drought resistance, lodge resistance and higher regeneration, and it is a fine variety for forage. Raw protein of Jincao 1 is 15.29%, raw fat is 2.96% and non-N extracted material is 32.29%,mature stem sogar is about 20^0（BX）. So Jincao 1 is an higher quality forage for caw, sheep and fish.