摘要
１９９３年５月至１１月对多花黑麦草、苇状羊茅、属间杂种及其后代的抗旱耐热性进行了研究。结果表明，杂种Ｆ１、苇状羊茅植株对高温干旱表现极强的抗性，抗性指数分别达３．９９和３．６８，越夏率分别为１００％和９３．７％；多花黑麦草对高温干旱反映敏感，抗性指数极低，仅为０．８２；杂种后代选系的抗旱耐热性较多花黑麦草有显著提高，但低于苇状羊茅及杂种Ｆ１。表明利用多花黑麦草与苇状羊茅杂交可以改良多花黑麦草的抗旱耐热性。
he resistances to drought and heat of Lolium hybridum
×Festuca arundinacea Scherband progenies were studied from May to Novermber in 1993 in
Nanjing.The F1 hrbrid and Festuca show very strong resistance to drought and heat,the
resistance indexs are3. 99 for the F1 hybrid and 3.68 for Festuca,their over summer
percentages are 100 and 93.70 respectively.Lolium easly suffers from drought and high
tenperature, its re-sistance index is lower.The resistance indexs of two strains are higher than
that of Lolium,but lower that of Festuca and F1 hybrid.These results show the resistances to
drought and heat of Lolium can be improved by Lolium×Festuca.
出处
《中国草地》
CSCD
1996年第1期39-41,共3页
Grassland of China
关键词
黑麦草
羊茅
属间杂种
抗旱性
耐热性
Lolium
hybridum,Festuca arundinacea Scherb,hybrid,strain,resistance to drought and heat
