WANG Bei-bei,HE Qian-rui,ZHANG Jia-wei,et al.Comprehensive Evaluation of Photosynthetic Capacity of Different Soybean Varieties Under Low LightComprehensive Evaluation of Photosynthetic Capacity of Different Soybean Varieties Under Low Light[J].Soybean Science,2021,40(01):45-58.[doi:10.11861/j.issn.1000-9841.2021.01.0045]
弱光下不同大豆品种光合能力综合评价
- Title:
- Comprehensive Evaluation of Photosynthetic Capacity of Different Soybean Varieties Under Low LightComprehensive Evaluation of Photosynthetic Capacity of Different Soybean Varieties Under Low Light
- 文章编号:
- 2021,40(1):045-058
- Keywords:
- Soybean; Seedling stage photosynthetic capacity; Multivariate statistical analysis; Comprehensive evaluation
- 文献标志码:
- A
- 摘要:
- 为筛选不同光合能力的大豆品种,以37个大豆品种苗期光合能力的16个参数为研究对象,通过盆栽试验设置正常光照(1 000 μmol?m-2?s-1)和遮荫光照(400 μmol?m-2?s-1)两种光照环境,对大豆苗期光合能力进行综合评价。结果表明,用主成分分析法可以将16个单项指标转换为4个独立的综合指标,使用隶属函数法计算综合光合能力评价值(D),根据其大小将37个大豆品种分为3类,第一类是强光合能力类型,第二类是中度光合能力类型,第三类是低光合能力类型。采用逐步回归法建立了大豆苗期光合能力评价数学模型,D=-0.950+0.118X12+0.230X16+0.436X9+0.122X14+0.037X4+0.567X5+0.065X10(R2=0.970,P=0.000 1),筛选出茎生物量、总生物量、实际光化学量子效率、柄生物量、蒸腾速率、PSⅡ有效光化学量子产量、叶面积7个鉴定指标,可用于套作大豆苗期光合能力评价指标。
- Abstract:
- In order to screen soybean varieties with different photosynthetic capacity, 16 parameters of photosynthetic capacity of 37 soybean varieties at seedling stage were taken as the research objects. Two light environments, normal light(1 000 μmol?m-2?s-1) and shade light (400 μmol?m-2?s-1) were set up in pot experiments to comprehensively evaluate the photosynthetic capacity of soybean seedlings. The results showed that 16 individual indicators were converted into4 independent comprehensive indicators with the principal component analysis method, and the comprehensive photosynthetic capacity evaluation value (D) was calculated with the membership function method. According to their values, 37 soybean varieties were divided into 3 categories. The first category belonged to the strong photosynthetic capacity type, the second category belonged to the moderate photosynthetic capacity type, and the third category belonged to the low photosynthetic capacity type. The mathematical model of soybean shade tolerance evaluation was established by stepwise regression method, D=-0.950+0.118X12+0.230X16+0.436X9+0.122X14+0.037X4+0.567X5+0.065X10(R2=0.970, P=0.000 1),7 identification indexes of stem biomass, total biomass, actual photochemical quantum efficiency, stalk biomass, transpiration rate, PSⅡ effective photochemical quantum yield and leaf area were screened for soybean seedling photosynthetic capacity evaluation indexes.
参考文献/References:
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备注/Memo
国家重点研发计划(2017YFD0101500)。