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THE RESEARCH OF LIGHT TEMPERATURE AND ENCOLOGICAL CHARACTER OF GUIZHOU RICE VARIETIES Ⅰ. THE LIGHT SENSITIVITY, TEMPARATURE RESPONSE, GROWTH PERIOD OF SHORT-DAY WITH HIGH TEMPARATURE AND RIPENING STAGE ON LOCAL RICE VARIETIES

Yang Changda  
66 rice varieties collected from the different parts of Guizhou were divided into two groups: the natural day-length (check group) and artifical day-length of 10 hours group. The results are as follows: The light sensitivity of rice was weak-midding (Ⅰ-Ⅵ). The temparature response was weak-middingstrong(Ⅲ-Ⅸ). The growth period of a short-day high tempar temparature was long. The results show that the relation between headingday and light sensitivity, growth period short-day with high temparature is obvious.
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