Abstract:
【Objective】 To select superior varieties of fig more suitable for the introduction and local cultivation in Hetian in Xinjiang.
【Methods】 Five fig varieties and one local variety introduced in the solar greenhouse in Hotan area were taken as the research objects, and the right angle hyperbolic correction model was used to fit and analyze the photosynthesis and effective photosynthetic radiation intensity of the leaves.
【Result】 The net photosynthetic rate of 'Jinaofen' variety was the largest in the morning, reaching 23.4 μmol/(m
2·s), which explained that it can quickly perform photosynthesis in the morning to assimilate more organic matter. In the morning, the dark breathing rate of Xinjiang Early Yellow was the lowest, at 0.86 μmol/(m
2·s), and in the afternoon, the dark breathing rate of Branrick was the lowest, at 0.57 μmol/(m
2·s). The light compensation points of the three varieties Xinjiang Zaohuan, Branrick and Jinaofen were lower, which were 30.0, 27.5, 30.0 μmol/(m
2·s), showing that the last three varieties first accumulated organic matter, thus accumulating more energy in a limited time. The saturated light intensity of the four varieties Branrick, Japan Ziguo, Jinaofen and Xinjiang Zaohuang was relatively large, respectively 2,277.2,1,939.4,1,929.4 and 1,899.4 μmol/(m
2·s). In the morning, Jinaofen and Minaia had high intrinsic quantum efficiency, which were 0.062 μmol/(m
2·s) and 0.054 μmol/(m
2·s). In addition, the apparent quantum yield was also relatively high, 0.126 μmol/(m
2·s) and 0.049 μmol/(m
2·s). In the afternoon, Jinaofen and Japan Ziguo had higher intrinsic quantum efficiencies: 0.051 μmol/(m
2·s) and 0.048 μmol/(m
2·s). The apparent quantum efficiency of Japanese Ziguo was also high, which was 0.040 μmol/(m
2·s).
【Conclusion】 Jinaofen has the most excellent comprehensive photosynthetic performance among the six varieties; The comprehensive photosynthetic performance of the four varieties Menaya, Qingpi, Branrik and Xinjiang Zaohuang is at the second rank; Japan Ziguo has poor comprehensive photosynthetic performance.