杂种披碱草及其亲本种子萌发期抗逆性比较试验

Studies on the resistant characters of two hybrids of Elymus and their parents during germination

研究了杂种披碱草——圆柱披碱草毋Elymus cylindricus×披碱草E.dauricus(简称Y×P)和披碱草×肥披碱草E.excelsus(简称P×F),及其亲本——披碱草、肥披碱草、圆柱披碱草的种子萌发期抗逆性.结果表明:5种草耐盐性排序为Y×P>P×F>披碱草>圆柱披碱草>肥披碱草.5种牧草中P×F对盐的抗性最强,而肥披碱草对盐的抗性最差.抗旱性方面,P×F和Y×P的抗旱性较强,肥披碱草的抗旱性最差,而其他牧草种抗旱性居中.

The resistant characteristics during germination of two hybrids, including Elymus cylindricus ×E. dahuricus and E. dahuricus ×E. excelsus and their parents, were studied in this paper.The results indicated that the hybrids had higher salt-tolerence. The order of salt-tolerence of five forages during germination was E. cylindricus ×E. dahuricus > E. dahuricus ×E. excelsus > E. dahuricus > E. cylindricus > E. excelsus. The both hybrids ( E. cylindricus ×E. dahuricus and E. dahuricus ×E. excelsus )...