不同处理对银杏根生垂乳形态发生及生长的影响

doi:10.11707/j.1001-7488.20140709

Abstract

Abstract:

In this paper, 1-year-old, 2-year-old and 5-year-old Ginkgo biloba L. seedlings were used to investigate the influence of stump, lying seedlings horizontally and transplant on occurrence, morphology, biomass and water content of rooted chichies. The results showed that the chichi occurrence rate of 1-year-old G. biloba. seedlings was 22.00%. The occurrence rate of the stumped 2-year-old seedlings was 58.81% which was highest with the treatment. The occurrence rates of platted or transplanted 5-year-old seedlings were 100.00%. The average No. of chichies per plant of 1-year-old G. biloba seedlings was 1.11. The average No. of root chichies of stumped seedlings was 1.99 in 2-year-old seedlings, which was highest, while the untreated control was 1.08. In 5-year-old seedlings, the average No. of rooted chichies of stumped seedlings was 1.81, while the control was only 1.07. The average basal diameter of root chichies of 1-year-old seedlings was 0.38 cm. The average basal diameter of root chichies of stumped 2-year-old seedlings was 1.39 cm while the control was only 0.99 cm. The mean basal diameter of rooted chichies of stumped 5-year-old seedlings was 2.67 cm while the control was 1.93 cm. The average length of root chichies of 1-year-old seedlings was 0.20 cm. The maximum average length of root chichies of platted 2-year-old and 5-age seedlings were 1.15 cm and 3.93 cm, which those of the controls were 0.58 cm and 2.51 cm. The 1-year-old seedlings had no adventitious roots occurred from root chichies. The stumped 2-year-old and 5-age seedlings had the greatest average No. of adventitious roots, and were 2.58 and 4.06. The 5-year-old control seedlings had 1.93 adventitious roots. The average length of adventitious roots of stumped 2-year-old seedlings was 9.44 cm. The average length of adventitious roots of platted 5-year-old was longest and 25.36 cm. The thickness of chichies was thicker than that of roots and there was a significant difference between them. The proportion of chichi xylon of 1-year-old seedling was 16.98% while the root was 25.29%. The maximum proportion of xylon in stumped 2-year-old seedlings was 23.19%, while the maximum proportion of root in transplanted seedlings was 26.88%. In transplanted 5-year-old seedlings, the proportion of xylon was 35.85%, and the proportion of roots was 32.54%. There was a significant difference between the two and the root. Stumping, keeping plat and transplanting had significant influence on the fresh and dry weight of chichies. The bark moisture content was more than that of xylon, and there also was significant difference in the moisture content between chichies and roots, and the difference became greater as the seedlings grew older. In this article, influence of the different treatments on morphology, biomass, adventitious roots of rooted chichies was discussed.

Key words: Ginkgo biloba seedling, rooted chichi, morphological characteristics, biomass and moisture content, stump, keep plat and transplant

CLC Number:

S718.43

Fu Zhaojun, Liu Lijuan, Xing Shiyan, Liu Xiaojing, Xin Hong, Wu Qikui. Influence on Morphogenesis and Growth of Rooted Chichies of Ginkgo biloba by Different Treatments[J]. Scientia Silvae Sinicae, 2014, 50(7): 58-65.

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Influence on Morphogenesis and Growth of Rooted Chichies of Ginkgo biloba by Different Treatments

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