不同苹果砧木叶片解剖结构及色素含量对盐胁迫的响应

Journal of Tianjin Agricultural University ›› 2015, Vol. 22 ›› Issue (2): 1-5.

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Responses of Leaf Anatomical Structure and Pigment Content of Distinct Apple Stocks to Salt Stress

LUO Jian-xia, WU Jian-qiang, ZENG Li-rong, ZHENG Xin, ZHANG Ting, MAO Wen-wen, RONG Tao

College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300384, China

Received:2015-03-18 Published:2015-06-30

Abstract

Abstract: Salt resistance of three crabapple species (American Malus spectabilis, M. robusta and M. prunifolia) was compared by salt stress treatment. Plant morphology, leaf anatomical structure, pigment content and stomatal characteristics were determined in the experiment. The results show that American Malus prunifolia presented the slightest salt injury symptom in the three species under salt stress, with the most serious injury for M. prunifolia. Leaf thickness of three species decreased when the salt concentration increased, with the smallest decreasing range for American Malus spectabilis and the largest one for M. prunifolia. Pigment contents of M. robusta and M. prunifolia had a trend to decrease with the increase of salt concentration, but that of American Malus spectabilis to increase instead, with the greater decreasing range for M. prunifolia. Stomatic opening degree of the three species decreased, but the stomatal density of those species had a trend to increase with the aggravation of salt stress, with the greatest decreasing extent of stomatic opening degree and the smallest increasing range of stomatal density for M. prunifolia. According to the indexes quoted above, salt resistance strength of the tested species can be ranked as follows: American Malus spectabilis>M. robusta>M. prunifolia.

Key words: apple stock, crabapple, salt stress, leaf anatomical structure, pigment content, stoma

CLC Number:

LUO Jian-xia, WU Jian-qiang, ZENG Li-rong, ZHENG Xin, ZHANG Ting, MAO Wen-wen, RONG Tao. Responses of Leaf Anatomical Structure and Pigment Content of Distinct Apple Stocks to Salt Stress[J]. Journal of Tianjin Agricultural University, 2015, 22(2): 1-5.

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Responses of Leaf Anatomical Structure and Pigment Content of Distinct Apple Stocks to Salt Stress

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