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连续多年试验研究表明 ,在相同的试验处理条件下 ,小麦品种的温度型不因年份、试验、栽培因素的改变而逆转 ;小麦冠层顶三叶各叶位的叶色消褪和失绿面积变化存在显著的温度型间的差异 ,这种差异随叶位的降低和衰老的加剧而逐渐增大 ;小麦开花后芒的衰老程度与开花后天数的关系符合幂函数方程 ,不同温型小麦芒的衰亡状况从花后 2 0天开始有明显差异 ,冷型小麦芒褪色和衰亡的速度比暖型小麦慢。在育种实践中 ,可考虑将冠层温度、冠层叶片和芒等表观性状有机结合 ,以快速、准确地识别冷温材料 ,选择冷温后代
Continuous years of experimental studies have shown that under the same experimental treatment conditions, the temperature type of wheat varieties is not reversed due to changes in the year, experiment, cultivation factors; leaf color fade and loss of green area There was a significant difference in temperature pattern between the two cultivars. The difference gradually increased with the decrease of leaf position and the increase of senescence. The relationship between the degree of senescence and the days after flowering was in accordance with the power function equation. The decay status showed obvious difference from 20 days after flowering, and the cold-type wheat mango faded and declined more slowly than the warm wheat. In breeding practice, we can consider the canopy temperature, canopy and Mount and other apparent characteristics of organic combination to quickly and accurately identify the cold temperature materials, select the cold temperature offspring