草业学报
草業學報
초업학보
Acta Prataculturae Sinica
2015年
9期
138-145
,共8页
航天育种%紫花苜蓿%多叶性状%品比实验
航天育種%紫花苜蓿%多葉性狀%品比實驗
항천육충%자화목숙%다협성상%품비실험
space mutation breeding%alfalfa (Medicago sativa )%multifoliate%variety comparison trial
航天育种是近十几年来快速发展的农业高科技新领域，已经变成一种主要的诱变育种方法。本研究以航天搭载的紫花苜蓿种子为基础材料，选育出我国第一个航天诱变多叶型紫花苜蓿新品种“航苜1号”。为验证该品种的生产性能，在兰州进行生产性能的品种比较试验，试验结果表明：多叶性状使航苜1号叶量比对照增加5．72％；干草产量（14237．5 kg／hm2）比对照提高13．26％；第一茬和第二茬草开花初期粗蛋白质含量分别为20．08％和18．42％，分别高于对照2．97％和5．79％；18种必需氨基酸为12．32％，高于对照1．57％；微量元素明显优于对照品种。多叶率与其他各指标间的相关性分析表明，多叶率和草产量、粗蛋白、氨基酸总量呈显著正相关。由此可见，该品种具有多叶率高、产草量高和营养含量高的特性。
航天育種是近十幾年來快速髮展的農業高科技新領域，已經變成一種主要的誘變育種方法。本研究以航天搭載的紫花苜蓿種子為基礎材料，選育齣我國第一箇航天誘變多葉型紫花苜蓿新品種“航苜1號”。為驗證該品種的生產性能，在蘭州進行生產性能的品種比較試驗，試驗結果錶明：多葉性狀使航苜1號葉量比對照增加5．72％；榦草產量（14237．5 kg／hm2）比對照提高13．26％；第一茬和第二茬草開花初期粗蛋白質含量分彆為20．08％和18．42％，分彆高于對照2．97％和5．79％；18種必需氨基痠為12．32％，高于對照1．57％；微量元素明顯優于對照品種。多葉率與其他各指標間的相關性分析錶明，多葉率和草產量、粗蛋白、氨基痠總量呈顯著正相關。由此可見，該品種具有多葉率高、產草量高和營養含量高的特性。
항천육충시근십궤년래쾌속발전적농업고과기신영역，이경변성일충주요적유변육충방법。본연구이항천탑재적자화목숙충자위기출재료，선육출아국제일개항천유변다협형자화목숙신품충“항목1호”。위험증해품충적생산성능，재란주진행생산성능적품충비교시험，시험결과표명：다협성상사항목1호협량비대조증가5．72％；간초산량（14237．5 kg／hm2）비대조제고13．26％；제일치화제이치초개화초기조단백질함량분별위20．08％화18．42％，분별고우대조2．97％화5．79％；18충필수안기산위12．32％，고우대조1．57％；미량원소명현우우대조품충。다협솔여기타각지표간적상관성분석표명，다협솔화초산량、조단백、안기산총량정현저정상관。유차가견，해품충구유다협솔고、산초량고화영양함량고적특성。
Outer space mutation breeding has become an important characteristic of mutation breeding in china. The first variety of alfalfa bred by space mutation in China is ‘Hangmu No.1’.The characteristic of Hangmu No.1 alfalfa are high multifoliate rate,hay yield and nutrient content.To test the productive performance of Hangmu No.1,comparative testing was conducted in Lanzhou.The results indicates that Hangmu No.1 had significantly increased leaf mass,5.72% higher than controls;Hay yield was 14237.5 kg/ha,13.26% higher than the control varieties;crude protein content from the first and second harvest (anthesis stage)were 20.08% and 18.42% respectively,2.97% and 5.79% higher than control varieties.Essential amino acids and trace element contents were also significantly higher than control varieties.Correlation analysis between multi-foliate rate and others agronomic traits revealed that multifoliate rate was significantly positively correlated with hay yield,crude protein content,and amino acid content.This study indicates that the multifoliate trait can improve yield and nutritional value of alfalfa hay.
