In this paper, the colored cotton varieties Huaizongza 1 (brown fiber)，Huailuza 1 (green fiber）, and their parental material zms-41(the contrast) were used as experimental materials to analyze the physiological characteristics and yield variation. The results showed the chlorophyll content (a + b) was the highest in the parental plant while lowest in green-fiber one. The chlorophyll content (a + b) were great differences between green-fiber cotton cultivar and the parental plant after full-blooming stage. Compared with the contrast, the leaf area indices of brown-fiber cultivar and green-fiber one went up mainly in the early growth stage but fell faster after full-blooming stage, and the specific leaf weight of colored cotton was relatively lower in the whole growth period. Not only the photosynthetic rate in the former full-blooming stage but also the transpiration rate in the bud stage of green-fiber cultinar and brown-fiber one were little higher than that of the contrast, but their transpiration rates were obviously lower than that of the contrast in the full-blooming stage. For yields, there were 16.7 % increase in green-fiber cultivar than in green-fiber one. Compared with the contrast, the two colored cotton varieties presented low yield, boll weight, lint percentage and number of cotton boll per plant.
Keywords
green-fiber cotton /
brown-fiber cotton /
photosynthesis characters /
yield
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