优良饲用作物新品种——蒙农青饲1号高丹草选育  

Breeding of Forage Crop——Sorghum bicolor×Sorghum sudanense cv.Mengnong Qingsi No.1.

作　　者：于卓[1] 秦永梅[1] 赵晓杰[1] 赵娜[1] 闫文芝[1] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019

出　　处：《中国草地》2004年第2期1-9,共9页Grassland of China

摘　　要：以高粱雄不育系A2与黑壳苏丹草种间杂交后代为选择群体,历经8个世代育成了蒙农青饲1号高丹草。该草植株整齐,株高350cm以上,发育前期生长速度快,生育期136～140d,中晚熟类型,种子活秆成熟,茎叶青绿期长;分蘖性和再生性强,单株分蘖数5～8个,生长季内可刈割3次,鲜草产量133000kg/hm2左右,种子产量6000kg/hm2左右;茎叶柔嫩、多汁,糖锤度3.44%,茎叶比3.04;在拔节期干物质中粗蛋白质含量高达14.71%,开花期的粗蛋白质含量10.32%、粗脂肪4.05%、粗纤维34.90%、粗灰分5.13%、无氮浸出物43.44%,并富含各种氨基酸,饲草营养价值高,氰化物(CN-)含量低,饲喂安全,为优等饲草;抗逆能力较强,抗倒伏、抗病虫、抗寒、较抗旱,适宜于内蒙古及毗邻省区种植。Sorghum bicolor×Sorghum sudanense cv.Mengnong Qingsi No.1, a new forage crop cultivar selected from interspecies hybrid descendents between A_2 male sterility line of sorghum and black hull sudangrass,had been bred through 8 generations.The plants of the forage crop were regular,the plant height was more than 350cm and grown fast at earlier stage,growing period was 136～140 days,belonging to middle-late maturing type,the stems and leaves were green after seed maturing;the tiller number per plant were 5～8 and can be cut 3 times in growing season,the fresh yield and seed yield were about 133000kg/hm^2 and 6000kg/hm^2 respectively,the stems and leaves were tender and juicy,the sugar dioptre was 3.44%,the ratio of stem to leave was 3.04;the content of crude protein in dry matter was 14.71% at jointing stage, the content of crude protein was 10.32%, crude fat 4.05%, crude fiber 34.90%, crude ash 5.13%, soluble carbohydrate 43.44%,rich in amino acids at flowering stage,the content of CN^- was low, safe for feeding,which was a excellent forage crop;it was strong in lodging resistance,disease resistance,cold resistance,and stronger in drought resistance,suitable to grow in Inner Mongolia and adjacent provinces.

关 键 词：饲用作物 品种 蒙农青饲1号 高丹草 远缘杂交 育种 营养价值 产量 抗逆性 

分 类 号：S544.903.5[农业科学—作物学]