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以“长富2号”“新红1号”和“红富士”芽变优系苹果为试材,采用常规的石蜡切片法,比较了3份供试材料叶片的解剖结构,测定3份材料的叶片厚度、栅栏组织厚度、海绵组织厚度、上表皮组织厚度、下表皮组织厚度、CTR、SR和栅海比等8个与抗旱性相关的生理指标,运用隶属函数法对3份供试材料的抗旱性进行了综合评价。结果表明:3份供试材料的叶片解剖结构存在一定程度的差别,芽变优系和“新红1号”的栅栏组织发达、海绵组织和叶片较厚,极显著大于“长富2号”。由隶属函数法综合评价出3份供试材料抗旱性强弱的顺序依次为“新红1号”>芽变优系>“长富2号”。综合分析表明,芽变优系具有叶片厚、栅栏组织发达、海绵组织厚等短枝型苹果的特征,其抗旱能力强于长枝品种“长富2号”。
Using the conventional paraffin section method, the leaf anatomy of the three tested materials was compared with the apple with “Changfu No.2”, “Xinhong No.1” and “Fuji” Structure, the leaf thickness, palisade tissue thickness, sponge tissue thickness, upper epidermal tissue thickness, lower epidermal tissue thickness, CTR, SR and Grab ratio of 8 drought resistance-related physiological indicators were determined. The drought resistance of three tested materials was evaluated comprehensively. The results showed that the anatomical structures of the leaves of the three tested cultivars differed to some extent. The budding tissues of budding lines and Xinhong 1 were well developed, and the sponge tissues and leaves were thicker than those of Changhong number 2“. According to the membership function method, the sequence of drought resistance of 3 tested materials was evaluated as follows: ”Xinhong 1“> ”Budding“> Changfu 2 ”. The comprehensive analysis showed that the bud mutant system had the characteristics of short branch apple with thick leaf, developed palisade tissue and thick sponge tissue, and its drought resistance ability was stronger than that of the long branch variety Chang Fu No.2.