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人工气候箱控制试验表明，温敏型细胞核雄性不育小麦C49S的育性转换除主要受控于孕穗、抽穗期的温度外，孕稳、抽穗期的日长对育性转换有一定影响，C49S在低温短日照不育，温暖长日照可育。长日照提高结实率，短日照降低结实率。在不育低温下，15h长日照处理可使C49S育性部分恢复，在可育高温下，8h短日照处理可显著降低育性。
Artificial climate chamber control experiments showed that the fertility transformation of temperature-sensitive genic male-sterile wheat C49S was mainly controlled by the temperature of booting and heading stage, and the fertility transference was influenced by the days of fertility and heading date. C49S Short day at low temperature sterile, warm long day fertile. Long sunshine to improve seed setting rate, short sunshine to reduce the seed setting rate. Under sterile low temperature, 15h long sunshine treatment could partially restore the fertility of C49S. Under the fertile high temperature, 8h short-day treatment could significantly reduce fertility.