Fruiting and Seed Characteristics of Abies in Northwest Yunnan

doi:10.7525/j.issn.1673-5102.2023.05.002

Abstract

Abstract:

To explore the fruiting characteristics and seed characteristics and their variation patterns of Abies species distributed in Northwest Yunnan， and to provide material support and theoretical basis for promoting the regeneration and restoration of Abies forest， the specimens and cones of seven Abies species distributed in Northwest Yunnan were collected and identified， and the seed morphological characteristics， seed viability， and fruiting characteristics were analyzed， and then the differences among species and regions were explored separately. The results showed that the length， width and thickness of seeds of seven Abies species in Northwest Yunnan were 6.04-10.22 mm， 2.03-3.32 mm and 1.26-2.24 mm， respectively， and the thousand-grain weight was 4.26-30.50 g. The thousand-grain weight was significantly correlated with seed length， width and thickness （r>0.8， P<0.01）. The average rates of plump， empty and insect-eaten seeds of seven Abies species in Northwest Yunnan were 27.51%， 4.92% and 67.58%， respectively. The rate of plump seed was low， and that of empty and insect-eaten seeds was high. Abies ernestii var. salouenensis was not further analyzed in this article due to field investigations revealing that most of them had no cone and only one tree’s cones were collected in this study. For the other six species， the rate of insect-eaten seeds did not differ significantly between species（P=0.750）， or between regions（P=0.204）. However， there were interspecies differences in the rate of plump seeds（P=0.005） and empty seeds（P=0.007）. There were interspecific（P=0.008） and interregional（P=0.036） differences in Abies seed viability. Therefore， seed viability of Abies was affected by both species characteristics and environmental factors.

Key words: Abies, seed characteristics, fruiting characteristics, viability

CLC Number:

S791.14

Dan WANG, Zhongshuai ZHANG, Qingyin ZENG, Xuemin HAN. Fruiting and Seed Characteristics of Abies in Northwest Yunnan[J]. Bulletin of Botanical Research, 2023, 43(5): 647-656.

Figures/Tables 11

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物种 Species	采集地点 Location	种子长度 Length/mm	种子宽度 Width/mm	种子厚度 Thickness/mm	千粒质量 Thousand-grain mass/g
Ade	CS	6.06±0.54a	2.14±0.25a	1.33±0.21a	6.39±1.67a
Afe	BMX	7.99±1.18b	2.91±0.41c	1.85±0.27c	16.28±2.65b
Afe	XZD	8.50±0.50e	2.81±0.27f	1.68±0.24fg	23.01±4.30d
Afe	YLX	7.66±0.69b	2.76±0.42de	1.72±0.23cde	22.35±0.62d
Afo	BZL	7.42±0.71b	2.67±0.34c	1.80±0.47cde	15.88±1.66b
Ag	BMX	8.29±1.17d	2.90±0.40de	1.83±0.25def	21.2±4.26d
Ag	XZD	7.94±0.58cd	2.80±0.22cd	1.83±0.18def	19.98±0.21cd
Ag	YLX	7.83±0.78c	2.54±0.52b	1.59±0.22b	13.46±0.60b
Anu	BZL	7.71±0.98bc	2.87±0.37d	1.72±0.22c	17.25±4.57bc
Ags	BMX	8.22±1.20d	2.79±0.48cd	1.81±0.31cde	20.19±4.63cd
Ags	XZD	8.25±0.98d	3.01±0.35ef	1.87±0.3efg	22.19±3.94d
Ags	YLX	7.72±0.70bc	2.69±0.29c	1.72±0.21cd	16.02±2.19b
Aes	YLX	8.23±0.75d	3.29±0.28g	1.94±0.28g	29.39±1.07e

物种 Species	地点 Location	虫蚀粒率 Insect/%	空秕粒率 Empty/%	饱满率 Plumpness/%	生活力 Viability/%
Ade	CS	0.50±0.71a	80.00±9.90cde	19.50±10.61a	67.50±36.06ab
Afe	BMXS	0a	47.33±10.21ab	52.67±10.21bc	73.00±12.23ab
Afe	XZD	8.80±8.61a	70.40±15.53bcde	20.80±14.86a	85.67±3.51b
Afe	YLX	3.00a	38.00a	59.00c	44.00a
Afo	BZL	5.25±7.93a	62.75±23.37abc	32.00±21.89abc	96.50±4.95b
Ag	BMXS	4.83±5.57a	68.67±22.49bcd	26.50±23.48ab	54.33±19.64a
Ag	XZD	3.00a	95.00de	2.00a	—
Ag	YLX	0a	98.50±0.71e	1.50±0.71a	—
Anu	BZL	1.17±1.60a	67.67±18.47abcd	31.17±18.58abc	83.50±9.11b
Ags	BMXS	8.20±12.16a	63.90±17.98abc	27.80±21.05ab	52.83±19.77a
Ags	XZD	6.40±9.97a	81.40±15.24cde	12.20±6.54a	85.00±12.73b
Ags	YLX	11.33±16.29a	57.33±8.51abc	31.33±16.62abc	48.67±7.10a
Aes	YLX	0a	100.00e	0a	—

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