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以木麻黄12个半同胞家系为试验材料,在温室条件下对干旱胁迫时各家系的生理与生长指标进行数量遗传分析。结果表明,各生长指标的遗传变异系数、互作变异系数、重复率和互作率通常都大于生理指标。以6个生理指标及3个生长指标与木麻黄苗高进行逐步回归分析表明,在不同水分胁迫条件下影响家系苗高生长的主导因素不同。通过对木麻黄苗高和生物量与水分互作及稳定性分析,依据生产力、适应性和稳定性指标将12个参试家系划分为3类,田间试验结果与各家系的室内抗旱性表现基本一致。
Quantitative genetic analysis was made on the physiological and growth indexes of each line in the drought stress conditions in 12 half-sib families of Casuarina equisetifolia as test material. The results showed that the genetic variation coefficient, interaction coefficient of variation, repetition rate and interaction rate of each growth index were usually larger than the physiological index. The stepwise regression analysis of six physiological indexes and three growth indexes of Casuarina equisetifolia showed that the dominant factors that affected the height growth of the family were different under different water stress conditions. Based on the analysis of the interaction and stability of Casuarina equisetifolia and biomass and water, 12 test families were divided into three groups based on the indicators of productivity, adaptability and stability. The results of field experiments and indoor drought resistance Basically the same.