Comparison of Seed Germination and Seedling Growth of 7 Kinds of Psammophytes and Xerophytes

doi:10.11924/j.issn.1000-6850.casb20200100043

Abstract

Abstract:

7 species of psammophytes and xerophytes, including Apocynum venetum, Poacynum hendersonii, Kalidium foliatum, Kalidium cuspidatum, Reaumuria soongca, Agriophyllum squarrosum and Nitraria tangutorum, were selected for the test of germination and seedling growth in the constant temperature incubator and greenhouse, so as to understand the characteristics of germination and seedling growth of common plants in north China. The results showed that the germination rate, germination potential and germination index of A. squarrosum were the highest, and those of the K. cuspidatum were relatively small, with a difference of 1.1 times. The germination rate of K. cuspidatum was the lowest, decreased by 10.93% and 11.76% compared with that of A. venetum and A. squarrosum. The dry and fresh weights of K. foliatum were significantly higher than those of other plants. The height of plant, crown width, hypocotyl length, taproot and lateral root growth rate were relatively large, and those of K. cuspidatum were relatively small. The growth rate of seedling height of P. hendersonii increased by 233.33%, 53.84%, 94.17%, 104.18% and 66.67%, respectively, compared with that of N. tangutorum, A. venetum, R. soongca, K. foliatum and K. cuspidatum. The germination process of A. squarrosum was faster than that of other plants, and the amount of seedling growth of P. hendersonii was the largest. The plants growing in moving-sand and saline environment adapted to the harsh environment by rapid germination and accelerated growth.

Key words: psammophyte, seed germination, seedling growth, growth rate, vegetation recovery

CLC Number:

S332.6

Xu Yan, Xu Xianying, Chong Peifang, Liu Hujun. Comparison of Seed Germination and Seedling Growth of 7 Kinds of Psammophytes and Xerophytes[J]. Chinese Agricultural Science Bulletin, 2020, 36(19): 62-67.

Figures/Tables 6

References 30

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植物种类	发芽率/%	发芽势/%	发芽指数
罗布麻	88.00±2.64a	47.33±3.71d	109.21±2.41d
大叶白麻	86.33±3.17ab	61.33±2.02ab	133.70±62.56b
盐爪爪	84.66±2.96ab	59.00±0.57abc	133.80±1.75b
红砂	82.66±2.02ab	50.30±32.60bcd	121.70±62.00c
黄毛头	79.30±31.76b	48.33±3.84cd	129.38±3.00b
沙米	88.66±3.28a	64.66±6.64a	148.20±2.63a

植物种类	发芽率/%	发芽势/%	发芽指数
罗布麻	88.00±2.64a	47.33±3.71d	109.21±2.41d
大叶白麻	86.33±3.17ab	61.33±2.02ab	133.70±62.56b
盐爪爪	84.66±2.96ab	59.00±0.57abc	133.80±1.75b
红砂	82.66±2.02ab	50.30±32.60bcd	121.70±62.00c
黄毛头	79.30±31.76b	48.33±3.84cd	129.38±3.00b
沙米	88.66±3.28a	64.66±6.64a	148.20±2.63a

种类	鲜重/g	干重/g	根茎比/%
罗布麻	0.29±0.032b	0.030±0.002b	25.67±0.048b
大叶白麻	0.16±0.023c	0.023±0.003bc	26.00±0.305b
盐爪爪	0.56±0.042a	0.070±0.11a	25.67±0.233b
红砂	0.30±0.017b	0.032±0.001b	70.00±0.115a
沙米	0.14±0.020c	0.026±0.002bc	30.00±0.023b
黄毛头	0.16±0.014c	0.014±0.001c	31.33±0.024b

种类	鲜重/g	干重/g	根茎比/%
罗布麻	0.29±0.032b	0.030±0.002b	25.67±0.048b
大叶白麻	0.16±0.023c	0.023±0.003bc	26.00±0.305b
盐爪爪	0.56±0.042a	0.070±0.11a	25.67±0.233b
红砂	0.30±0.017b	0.032±0.001b	70.00±0.115a
沙米	0.14±0.020c	0.026±0.002bc	30.00±0.023b
黄毛头	0.16±0.014c	0.014±0.001c	31.33±0.024b