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Studies on resistance to drought and heat of Lolium hybridum×Festuca arundinacea scherb and progenies

Junlong Li, Wang HuaiSan

Abstract

The resistances to drought and heat of Lolium hybridum×Festuca arundinacea Scherb and progenies were studied from May to Novermber in 1993 in Nanjing. the F1 hybrid and festuca show very strong resistance to drought and heat, the resistance indexs are 3.99 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 resistance 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.

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Key concepts: Festuca arundinacea, Festuca, Lolium, Agronomy, Biology, Lolium perenne, Resistance (ecology), Drought resistance