Identification and Evaluation of Resistance of Flue-Cured Tobacco with Different Genotypes to Fusarium Root Rot

doi:10.11924/j.issn.1000-6850.casb2023-0107

Abstract

Abstract:

In order to clarify the resistance of flue-cured tobacco with different genotypes to Fusarium tobacco root, the resistance was identified by crude toxin stress culture, inoculation of grain culture with fungi, and spore suspension culture. The results showed that the test varieties showed significant differences in resistance, ‘Y2001’, ‘Y2002’, ‘Changbohuang’, and ‘664-01’ showed resistance to Fusarium oxysporum, and ‘7710’, ‘7713’, ‘Y2007’, ‘Y2008’, ‘Zhongyan 100’ and ‘Xiaohuangjin 1025’ showed susceptibility to F. oxysporum. The identification results of the three inoculation methods were basically consistent, and a total of 4 resistant varieties (lines) were screened.

Key words: tobacco, Fusarium oxysporium, tobacco root rot, resistance, disease index

LI Xuejun, GUO Jing, SUN Jiping, SUN Huan, LI Fangfang, PING Wenli, LI Jianhua, ZU Huanxin, LI Xuhui, HOU Yong, GENG Shengna. Identification and Evaluation of Resistance of Flue-Cured Tobacco with Different Genotypes to Fusarium Root Rot[J]. Chinese Agricultural Science Bulletin, 2024, 40(4): 126-131.

Figures/Tables 8

References 30

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品种编号	品种（系）名称	发病率/%			根长抑制率/%
品种编号	品种（系）名称	3 d	4 d	5 d	根长抑制率/%
A₁	7710	1.67d	45.00b	73.33b	-
A₂	7713	5.00c	36.67c	65.00b	-
A₃	Y2001	6.67c	26.67d	35.00e	44.29b
A₄	Y2002	6.67c	23.33d	37.50d	46.38a
A₅	Y2007	5.00c	30.00d	61.67b	-
A₆	Y2008	11.67b	28.33d	50.00c	-
A₇	中烟100	15.00b	56.67a	95.00a	-
A₈	长脖黄	10.00b	15.00e	16.67f	51.02a
A₉	小黄金1025	28.33a	63.33a	100.00a	-
A₁₀	664-01	8.33b	20.00e	38.33d	0c

品种编号	品种（系）名称	发病率/%			根长抑制率/%
品种编号	品种（系）名称	3 d	4 d	5 d	根长抑制率/%
A₁	7710	1.67d	45.00b	73.33b	-
A₂	7713	5.00c	36.67c	65.00b	-
A₃	Y2001	6.67c	26.67d	35.00e	44.29b
A₄	Y2002	6.67c	23.33d	37.50d	46.38a
A₅	Y2007	5.00c	30.00d	61.67b	-
A₆	Y2008	11.67b	28.33d	50.00c	-
A₇	中烟100	15.00b	56.67a	95.00a	-
A₈	长脖黄	10.00b	15.00e	16.67f	51.02a
A₉	小黄金1025	28.33a	63.33a	100.00a	-
A₁₀	664-01	8.33b	20.00e	38.33d	0c

编号	品种（系）名称	病情指数	抗性评价	地上部鲜重减少率/%	地下部鲜重减少率/%
A₁	7710	55.56d	MS	59.18c	56.52c
A₂	7713	51.11d	MS	52.48d	65.00b
A₃	Y2001	14.81g	R	48.84e	47.37d
A₄	Y2002	33.33e	MR	50.00e	44.44d
A₅	Y2007	73.33b	S	79.57a	61.54b
A₆	Y2008	68.89b	S	55.21d	66.67b
A₇	中烟100	77.78a	S	52.14d	80.00a
A₈	长脖黄	24.44f	MR	42.11f	33.33e
A₉	小黄金1025	62.92c	S	64.10b	87.50a
A₁₀	664-01	15.87g	R	44.22f	44.00d

编号	品种（系）名称	病情指数	抗性评价	地上部鲜重减少率/%	地下部鲜重减少率/%
A₁	7710	55.56d	MS	59.18c	56.52c
A₂	7713	51.11d	MS	52.48d	65.00b
A₃	Y2001	14.81g	R	48.84e	47.37d
A₄	Y2002	33.33e	MR	50.00e	44.44d
A₅	Y2007	73.33b	S	79.57a	61.54b
A₆	Y2008	68.89b	S	55.21d	66.67b
A₇	中烟100	77.78a	S	52.14d	80.00a
A₈	长脖黄	24.44f	MR	42.11f	33.33e
A₉	小黄金1025	62.92c	S	64.10b	87.50a
A₁₀	664-01	15.87g	R	44.22f	44.00d

品种编号	品种（系）名称	病情指数	抗性评价
A₁	7710	68.89b	S
A₂	7713	59.56d	MS
A₃	Y2001	18.34h	R
A₄	Y2002	28.89f	MR
A₅	Y2007	55.56e	MS
A₆	Y2008	62.22d	S
A₇	中烟100	64.44c	S
A₈	长脖黄	25.19g	MR
A₉	小黄金1025	73.33a	S
A₁₀	664-01	20.00h	R