A preliminary study on the germination conditions of Bolboschoenus planiculmis corm

doi:10.6048/j.issn.1001-4330.2022.07.006

Abstract

Abstract:

【Objective】 The dormancy characteristics and germination environment of Bolboschoenus planiculmis were studied.【Methods】 The effects of different storage methods on the dormancy of it were studied by using Petri Dish Method and Pot method. The effects of different temperature, pH, salt content, soil humidity and buried depth on the germination of it were studied. The germination rate, germination index and average germination time of trigona were measured.【Results】 The best effect of sleep relieving was water storage at room temperature, and the germination rate was 88.89% after 30 days, while the worst was -20℃ dry storage condition. After 30 days storage, the bulb could not germinate; 25-30℃ was the suitable temperature for the germination of it, with the germination rate of 70%, among which 30℃ was the best germination temperature, and then inhibited the germination of corm with the increase of temperature; pH could germinate within 5-9 range The germination rate of the rhizome was 71.11% - 88.89%, which indicated that the germination rate of triangular bulb of trigonus was not limited by pH;the germination rate of the corm was over 80% when the concentration of NaCl was 0-25 mmol/L, and the germination rate decreased gradually with the increase of the concentration. When the concentration of NaCl was 150 mmol/L, the germination rate of the corm was only 11.11%, and the rhizome could still germinate at high salt concentration; with the soil humidity The germination rate increased ;The germination rate is the largest when the soil depth is 10 cm, which is 82.22%, indicating that is generally in the soil layer of 10 cm.【Conclusion】 Bolboschoenus planiculmis are like warm, wet and tolerant, and belong to the malignant weeds in cotton field, which is difficult to control.

Key words: sparganium bracteatum; corm germination; environmental factors; dormancy; germination

摘要：

【目的】研究扁秆荆三棱(Bolboschoenus planiculmis)球茎休眠特性及萌发环境条件。【方法】采用培养皿法和盆钵法,研究不同储存方式对扁秆荆三棱球茎解除休眠的影响,分析不同温度、pH、盐分、土壤湿度、埋土深度对扁秆荆三棱球茎萌发的影响,测定扁秆荆三棱球茎萌发率、萌发指数及平均萌发时间。【结果】室温水储方式眠解除效果最好,30 d后萌发率高达88.89%,而-20℃干储条件解除效果最差,储存30 d后球茎未能萌发;25~30℃是扁秆荆三棱球茎萌发的适宜温度,萌发率在70%,其中30℃为最适萌发温度,之后随温度的升高抑制球茎的萌发;pH在5~9均能萌发,萌发率在71.11%~88.89%,扁秆荆三棱球茎萌发不受pH的限制;NaCl浓度在0~25 mmol/L时,萌发率在80%以上,随着浓度的增大,扁秆荆三棱球茎萌发逐渐降低,在NaCl浓度为150 mmol/L时,球茎萌发率仅为11.11%,在高盐浓度下,扁秆荆三棱球茎仍能萌发;随着土壤湿度的增加,其发芽率随之增大;埋土深度10 cm时发芽率最大,为82.22%,扁秆荆三棱一般处于土层10 cm。【结论】扁秆荆三棱喜温湿且耐受性强,属于棉田恶性杂草,防治难度极大。

关键词: 扁秆荆三棱, 球茎萌发, 环境因素, 休眠, 萌发

CLC Number:

S451

XU Tongxin, LI Tao, WANG Haodong, QIAN Cancan, MA Jiangfeng, YANG Desong. A preliminary study on the germination conditions of Bolboschoenus planiculmis corm[J]. Xinjiang Agricultural Sciences, 2022, 59(7): 1606-1614.

许同心, 李涛, 王浩东, 钱灿灿, 马江锋, 杨德松. 扁秆荆三棱球茎萌发条件分析[J]. 新疆农业科学, 2022, 59(7): 1606-1614.

Figures/Tables 8

Fig.1 Effect of different storage methods on dormancy release of Bolboschoenus planiculmis

Fig.2 Dynamics of bulbs water uptake rate of Bolboschoenus planiculmis

Fig.3 Effect of temperature and light on bulbs germination rate of Bolboschoenus planiculmis

Fig.4 Effect of pH values on bulbs germination rate of Bolboschoenus planiculmis

Fig.5 Effect of salt stress on bulbs germination of Bolboschoenus planiculmis

Fig.6 Effect of soil moisture on bulbs emergence of Bolboschoenus planiculmis

Table 1 Effects of different treatments on bulbs germination of Bolboschoenus planiculmis

处理 Treatment		萌发率 Germination rate(%)	萌发指数 Germination index	平均萌发时间 Mean time of germination(d)	萌发启动时间 Initiation time of germination(d)
温度 Temperature	10℃	0d	-	-	-
	15℃	28.89^c	0.57^d	8.15^a	5.67^a
	20℃	66.67^b	2.1 $5 c d$	6.34^b	2.67^b
	25℃	73.3 $3 a b$	3.1 $5 b c$	5.94^b	1.00^c
	30℃	82.22^a	6.25^a	4.23^c	1.00^c
	35℃	62.22^b	4.03^b	4.22^c	1.3 $3 b c$
pH	5	71.11^c	3.45^c	4.40^a	1.67^a
	6	77.78^b	4.6 $3 b c$	3.41^b	1.33^a
	7	82.2 $2 a b$	4.5 $4 b c$	4.48^a	1.00^a
	8	88.89^a	6.37^a	3.64^b	1.00^a
	9	80.00^abc	3.82^c	4.55^a	1.33^a
	CK(7.2)	86.6 $7 a b$	5.5 $9 a b$	4.37^b	1.00^a
盐分NaCl浓度 Salt(NaCl) concentration (mmol/L)	0	88.89^a	5.59^a	4.37^d	1.00^c
	25	82.22^a	6.21^a	4.5 $7 c d$	1.00^c
	50	71.11^b	4.08^b	5.5 $7 b c$	1.00^c
	75	62.22^c	3.14^b	4.94^bcd	1.00^c
	100	44.44^d	2.04^c	5.05^bcd	1.33^c
	125	28.89^e	1.19c^d	5.77^b	2.67^b
	150	13.33^f	0.30^d	6.83^a	6.67^a

Table 1 Effects of different treatments on bulbs germination of Bolboschoenus planiculmis

处理 Treatment		萌发率 Germination rate(%)	萌发指数 Germination index	平均萌发时间 Mean time of germination(d)	萌发启动时间 Initiation time of germination(d)
温度 Temperature	10℃	0d	-	-	-
	15℃	28.89^c	0.57^d	8.15^a	5.67^a
	20℃	66.67^b	2.1 $5 c d$	6.34^b	2.67^b
	25℃	73.3 $3 a b$	3.1 $5 b c$	5.94^b	1.00^c
	30℃	82.22^a	6.25^a	4.23^c	1.00^c
	35℃	62.22^b	4.03^b	4.22^c	1.3 $3 b c$
pH	5	71.11^c	3.45^c	4.40^a	1.67^a
	6	77.78^b	4.6 $3 b c$	3.41^b	1.33^a
	7	82.2 $2 a b$	4.5 $4 b c$	4.48^a	1.00^a
	8	88.89^a	6.37^a	3.64^b	1.00^a
	9	80.00^abc	3.82^c	4.55^a	1.33^a
	CK(7.2)	86.6 $7 a b$	5.5 $9 a b$	4.37^b	1.00^a
盐分NaCl浓度 Salt(NaCl) concentration (mmol/L)	0	88.89^a	5.59^a	4.37^d	1.00^c
	25	82.22^a	6.21^a	4.5 $7 c d$	1.00^c
	50	71.11^b	4.08^b	5.5 $7 b c$	1.00^c
	75	62.22^c	3.14^b	4.94^bcd	1.00^c
	100	44.44^d	2.04^c	5.05^bcd	1.33^c
	125	28.89^e	1.19c^d	5.77^b	2.67^b
	150	13.33^f	0.30^d	6.83^a	6.67^a

Fig.7 Effect of buried depth on germination of Bolboschoenus planiculmis

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