丹参三倍体与二倍体叶片特征及抗旱性分析

doi:10.19640/j.cnki.jtau.2021.01.001

Journal of Tianjin Agricultural University ›› 2021, Vol. 28 ›› Issue (1): 1-5.doi: 10.19640/j.cnki.jtau.2021.01.001

• Researches and Scientific Notes • Next Articles

Leaf characteristics and drought resistance of triploid and diploid Salvia miltiorrhiza

Liu Wanqiu, Pang Junxiu, Cao Yannan, Wang Hui, Sun Yanjie, Sun Yafei, Long Hong^{Corresponding Author}

College of Horticulture and Landscape, Tianjin Agricultural University, Tianjin 300392, China

Received:2020-04-02 Online:2021-03-31 Published:2021-04-02

Abstract

Abstract: The plant anatomy method was used to observe the anatomical characteristicsof the leaves of artificial Salvia miltiorrhiza triploid and S. miltiorrhiza diploid plants, and their drought resistance was compared and analyzed. The results showed that the trichomes of mature leaves of triploid plants of S. miltiorrhiza was longer than that of diploid plants, and the stomatal length, guard cell length, and guard cell thickness of the abaxialtrichomes of the leaves were larger than those of the diploid of S. miltiorrhiza while stomatal density was lower, 62.8% of the diploid. Moreover, the leaf thickness, the thickness of palisade tissue and spongy tissue, and the thickness of adaxial epidermis were significantly increased in triploid of S. miltiorrhiza, and the ratio of palisade tissue to spongy tissue was higher than that of diploid plants. The thickness of palisade tissue couldreach 1.369 times of that in diploid plants. These results indicate that triploid of S. miltiorrhiza has stronger photosynthesis ability and ability to prevent water transpiration than diploid, and has higher drought resistance. This study can provide an experimental basis for drought resistance adaptability of polyploids, and provide a reference for the application of S. miltiorrhizatriploid in production.

Key words: leaf anatomical structure, drought resistance, triploid, Salvia miltiorrhiza

CLC Number:

S567.53

Liu Wanqiu, Pang Junxiu, Cao Yannan, Wang Hui, Sun Yanjie, Sun Yafei, Long Hong. Leaf characteristics and drought resistance of triploid and diploid Salvia miltiorrhiza[J]. Journal of Tianjin Agricultural University, 2021, 28(1): 1-5.

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Leaf characteristics and drought resistance of triploid and diploid Salvia miltiorrhiza

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