WATER USE OF ALFALFA GENOTYPES OF DIVERSE GENETIC ORIGIN AT THREE SOIL TEMPERATURES
WATER USE OF ALFALFA GENOTYPES OF DIVERSE GENETIC ORIGIN AT THREE SOIL TEMPERATURES
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DOI：
10.4141/cjps75-111
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发表时间：
1975-01
影响因子：
1.2
通讯作者：
J. McElgunn;D. Heinrichs
中科院分区：
文献类型：
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作者：
J. McElgunn;D. Heinrichs
在生长室中研究了不同土壤温度下15个不同遗传来源的苜蓿基因型的水分利用效率。在单位干物质生产耗水量上，基因型相似，但存在显著的温度×基因型互作。黄花苜蓿的基因型研究每天用水量比苜蓿和苜蓿基因型少，但这是因为它们的生长速度较慢。结果表明，在最佳水分条件下培育高产品种，应选择生长快、恢复快的品种，而不是水分利用效率。
The efficiency of water use of 15 alfalfa genotypes of diverse genetic origin was studied in a growth room at three soil temperatures. The genotypes were similar in water used per unit of dry matter produced, but there was a significant temperature × genotype interaction. Genotypes of Medicago falcata L. used less water per day than genotypes of Medicago media Pers. and Medicago sativa L., but this was due to their slower growth rate. It was concluded that to develop higher yielding cultivars for optimum moisture conditions, selection should be for high rate of growth and rapid recovery and not for water use efficiency.