Study on Leaf Characteristics and Photosynthetic Characteristics of Bud Mutation and Variety from Red Fuji

doi:10.6048/j.issn.1001-4330.2021.06.014

Abstract

Abstract: 【Objective】 To study the biological characteristics of leaves of red Fuji bud and to provide reference for the selection of superior bud variety.【Method】 In this experiment, three preferred types of red Fuji bud and two types of red Fuji were used as experimental materials to compare leaf characteristics with photosynthetic characteristics and analyze the correlation.【Result】 There was no significant difference in leaf length, leaf width, leaf thickness and leaf area of all materials tested (P<0.05), while the leaf weight and chlorophyll content of N₁ and N₂ were significantly different from those of the other three. There were also obvious differences in materials; the net photosynthetic rate and stomata conductance of N₁ were significantly higher than those of other materials; the daily change of the net photosynthetic rate of the test material was a 'bimodal' curve, showing an obvious photosynthetic 'midday break' phenomenon, but the peaks and troughs appeared at different times; correlation analysis shows that the net photosynthetic rate was extremely positively correlated with stomatal conductance, chlorophyll content, water use efficiency and transpiration rate (P<0.01), and was extremely significant negative correlation with intercellular CO₂ between cells (P＜0.01).【Conclusion】 The net photosynthetic rate, chlorophyll content, single leaf weight and stomatal conductance of "N1" were significantly higher than those of the other four test materials, showing strong photosynthetic capacity, which can be used as key materials for further seed selection of bud variation.

Key words: Red Fuji; bud mutation; leaf characteristics; photosynthetic characteristics

摘要： 【目的】研究红富士芽变叶片的生物学特性,为优良芽变选种提供参考依据。【方法】以3个优选的红富士芽变类型和2个红富士芽变品种为材料,对比叶片特征与光合特性,分析相关性。【结果】3个红富士芽变类型及2个品种的叶片长度、叶片宽度、叶片厚度和叶面积无明显差异(P<0.05),而N₁与N₂的单叶重、叶绿素含量差异显著,与其它3份材料也存在明显差异;N-1的净光合速率、气孔导度明显高于其他材料;供试材料的净光合速率日变化呈“双峰型”曲线,光合“午休”现象明显,但高峰、低谷出现时间不同;净光合速率与气孔导度、叶绿素含量、水分利用率及蒸腾速率呈极显著正相关(P ＜ 0.01),与胞间CO₂浓度呈极显著负相关(P＜0.01)。【结论】N₁的净光合速率、叶绿素含量、单叶重和气孔导度明显高于其它4份供试材料,光合能力较强。

关键词: 红富士, 芽变, 叶片特征, 光合特性

CLC Number:

S661.1

WU Zezhen, WEN Yue, HU Zhen, WANG Anli, ZHOU Wenjing, LI Wensheng. Study on Leaf Characteristics and Photosynthetic Characteristics of Bud Mutation and Variety from Red Fuji[J]. Xinjiang Agricultural Sciences, 2021, 58(6): 1086-1094.

吴泽珍, 温玥, 胡真, 王安丽, 周文静, 李文胜. 红富士芽变类型及芽变品种叶片特征与光合特性[J]. 新疆农业科学, 2021, 58(6): 1086-1094.

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