连作马铃薯根系分泌物鉴定及其对尖孢镰孢菌（Fusariumoxysporum）的作用

连作马铃薯根系分泌物鉴定及其对尖孢镰孢菌（Fusariumoxysporum）的作用

谢奎忠, 邱慧珍, 胡新元, 罗爱花

Identification of root exudates from continuous cropping potato in dry land and their allelopathy to Fusarium oxysporum

Kuizhong Xie, Huizhen Qiu, Xinyuan Hu, Aihua Luo

表4 苹果酸和棕榈酸对尖孢镰孢菌菌丝生长的影响

Table 4 Effect of Malic acid and Palmitic acid on mycelium growth of Fusarium oxysporum schlecht

有机酸	浓度 /（mmol·L^-1）	培养时间/d						菌丝鲜质量/g
		3		5		7
		菌落直径/mm	化感指数RI	菌落直径/mm	化感指数RI	菌落直径/mm	化感指数RI
苹果酸	0.00	32.08^b	—	50.34^b	—	65.04^b	—	0.0102^c
	0.05	33.98^ab	0.056^b	52.30^b	0.037^c	66.32^ab	0.019^b	0.0239^b
	0.10	34.67^ab	0.075^b	54.58^ab	0.078^b	67.82^ab	0.041^a	0.0389^b
	0.50	35.88^a	0.106^a	57.12^a	0.119^a	68.72^a	0.054^a	0.0767^a
棕榈酸	0.00	32.08^bc	—	50.34^b	—	65.04^bc	—	0.0102^c
	0.05	33.25^ab	0.035^b	52.72^ab	0.045^b	66.96^ab	0.029^b	0.0223^b
	0.10	34.12^a	0.060^a	53.62^a	0.061^a	67.24^a	0.033^a	0.0448^a
	0.50	32.37^c	0.009^c	50.22^b	-0.002^c	64.78^c	-0.004^c	0.0237^b