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温度是影响高粱籽粒产量的重要环境因子之一,通常认为高温有害于产量。经常根据籽粒形成的线性期间干物质积累的速率,以及有效灌浆期长度,分析禾本科作物的籽粒生长。在人工气候室里的研究,Chowdhury 等(1978)观察到,温度对高粱籽粒生长速率的影响与灌浆期持续时间无关。在平均温度阈值为25℃时,籽粒生长速率增至最大值;尽管随着温度升至33.5℃,发育速率(1/开花至成熟
Temperature is one of the important environmental factors that affect the grain yield of sorghum. It is generally considered that high temperature is detrimental to yield. Grains are often analyzed for grain growth based on the rate of dry matter accumulation during the linear period of grain formation and the length of the effective grain filling period. Studies in the climatic chamber, Chowdhury et al. (1978) observed that the effect of temperature on sorghum grain growth rate was independent of the duration of the grain filling period. The grain growth rate increased to a maximum at an average temperature threshold of 25 ° C; although the rate of development (1 / flowering to maturity) increased with increasing temperature to 33.5 ° C