不同生境和基质对经过牛消化道的新疆野苹果种子萌发和幼苗生长的影响

doi:10.13866/j.azr.2024.05.10

Abstract

Abstract:

This study aimed to reveal the effects of different habitats and substrates on seed germination and seedling growth of Malus sieversii after passing through digestive tract of cattle. A controlled experiment was set up in field based on the different habitats and substrates in which seeds were deposited after passing through the digestive tract of cattle. The three habitats were as follows: forest edges, gaps, and understory. The four treatments were as follows: W (seeds through digestive tract+intact feces), P (seeds through digestive tract+broken feces), T (seeds through digestive tract+soil), and control C (seeds not through digestive tract+soil). The results showed that: The seed germination rates, seedling survival rate, and seedling biomass of M. sieversii were significantly different (P<0.05) in different habitats and treatments. In the forest edge habitat, seeds germinated rate was higher in soil substrate compared to fecal substrate, while the gaps and understory habitats showed the opposite trend. Seedling survival rate was significantly higher in the forest edge and gaps habitats compared to the understory habitat. Under the same treatment, seedling biomass was higher in the forest edge compared to the gaps, and higher in the gaps compared to the understory. Within the same habitat, seedling biomass from fecal substrate in forest edge and gap habitats surpassed that of soil substrate. The study revealed that the heterogeneity of habitat and substrate is the main reason that affects the seed germination and seedling establishment of M. sieversii after passing through digestive tract of cattle.

Key words: Malus sieversii, endozoochory, habitats, substrate, seed germination, seedling growth

BAI Shilin, LYU Yaya, SHI Xiaojun. Effects of different habitats and substrates on seed germination and seedling growth of Malus sieversii after passing through digestive tract of cattle[J].Arid Zone Research, 2024, 41(5): 821-829.

Figures/Tables 7

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References 35

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生境	处理	株高/mm	基茎/mm	主根长/mm	叶片数/个
林缘	W	43.99±0.83Aa	1.47±0.03Ab	90.98±4.18Aa	6.00±0.20Aa
	P	41.24±1.29Aa	1.61±0.03Aa	85.76±3.27Aa	5.80±0.20Aab
	T	34.87±1.20Ab	1.41±0.03Ab	72.87±9.64Ab	6.00±0.14Aa
	C	34.76±1.10Ab	1.25±0.02Ac	79.32±2.54Aab	5.40±0.19Ab
林隙	W	51.30±1.39Aa	1.42±0.04Aa	75.10±3.95ABa	5.20±0.17ABa
	P	43.51±1.13Ab	1.46±0.03Bab	71.81±3.17Ba	5.671±0.16Aa
	T	32.24±1.39Ac	1.39±0.03Aab	83.06±5.78Aa	5.33±0.13Aa
	C	28.67±0.70Bc	1.30±0.03Ab	84.72±7.60Aa	5.56±0.18Aa
林下	W	38.54±2.59Ba	1.20±0.02Bb	65.13±4.96Ba	4.18±0.28Ba
	P	34.06±1.25Bab	1.21±0.02Cb	66.18±1.49Ba	4.20±0.14Ba
	T	29.96±1.03Aab	1.30±0.02Aa	69.49±1.63Aa	4.33±0.24Ba
	C	27.64±1.35Bb	1.29±0.02Aa	71.59±2.74Aa	3.80±0.24Ba

Effects of different habitats and substrates on seed germination and seedling growth of Malus sieversii after passing through digestive tract of cattle

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