WATER-SOLUBLE CARBOHYDRATES IN PERENNIAL RYEGRASS BREEDING .2. CULTIVAR AND HYBRID PROGENY PERFORMANCE IN CUT PLOTS
WATER-SOLUBLE CARBOHYDRATES IN PERENNIAL RYEGRASS BREEDING .2. CULTIVAR AND HYBRID PROGENY PERFORMANCE IN CUT PLOTS
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DOI：
10.1111/j.1365-2494.1989.tb01932.x
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发表时间：
1989-06-01
影响因子：
2.4
通讯作者：
HUMPHREYS, MO
中科院分区：
文献类型：
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作者：
HUMPHREYS, MO
测定了早熟黑麦草品种极光和5个晚熟黑麦草品种的水溶性碳水化合物（WSC）含量。200万地块在1983年被砍掉8次，1984年被砍掉5次。尽管受环境和植物发育的影响会有波动，但品种的WSC排名基本保持不变。奥罗拉的总WSC含量最高，Majestic和Aberystwyth S23最低，Perma、Melle和ba9795处于中等水平。在同一试验中，晚抽穗品种和极光之间的F2杂交种的排名也与之前在F1和F2间隔植株上的排名一致。WSC最高的是Melle F2，其次是Perma F2、Ba 9795 F2、S23 F2，最后是Majestic F2。这一排名在连续一代对抽穗日期一致性的激烈选择中也保持不变。结果表明，WSC性状在多年生黑麦草育种中具有一致性和可遗传性。奥罗拉是提高WSC的良好资源，而草坪型多年生黑麦草对杂交材料WSC含量有较强的负向影响。
Water-soluble carbohydrate (WSC) contents of the early heading perennial ryegrass cultivar Aurora and five late heading cultivars were assessed in samples from 1 m .times. 2 m plots cut eight times in 1983 and five times in 1984. Despite fluctuations due to effects of the environment and plant development, the ranking of the cultivars in terms of WSC generally remained constant. Aurora had the highest overall WSC content, Majestic and Aberystwyth S23 had the lowest while Perma, Melle and Ba 9795 were intermediate. In the same trial, the ranking of the F2 hybrids between the late heading cultivars and Aurora was also consistent with the obtained previously in F1 and F2 spaced plants. Melle F2 families had the highest WSC followed by Perma F2, Ba 9795 F2, S23 F2 and finally Majestic F2 families. This ranking also remained constant over a generation of intense selection for uniformity of heading date. It was concluded that WSC is a consistent and heritable trait in breeding perennial ryegrass. Aurora was a good resource for improving WSC but the turf-type perennial ryegrass, Majestic, had a strong negative effect on WSC content in hybrid material.