Smut Resistant Identification and Analysis of New Sugarcane Clones of Guitang

doi:10.3969/j.issn.1000-2561.2020.02.017

Abstract

Abstract:

The most effective way to control sugarcane smut is to plant resistant varieties. The evaluation of resistance to sugarcane smut is a very important procedure in the breeding of resistant varieties. In order to evaluate the resistance to smut of the eight new sugarcane clones bred by Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences, the suspension of mixed Sporisorium scitamineum was inoculated to the new clones to obtain the incidence, also the natural incidences of smut in the field were investigated. The investigation period included new planting and first ratoon of sugarcane. ROC22 was used as the control. The results showed that GT12-765 and GT12-2262 were resistant to smut; the clones GT12-2476 and GT12-2004 were moderately resistant; GT12-162 was moderate susceptible; GT12-762, GT12-2425 and GT12-917 were susceptible to smut; and the CK (ROC22) was susceptible. The artificial inoculation could be used to more accurately evaluate the resistance to sugarcane smut, compared to the natural infection. The results of this study would provide a basis for breeding sugarcane varieties with high resistance to smut.

Key words: sugarcane, smut, resistant identification, artificial inoculation, natural incidence

CLC Number:

S566.1

JING Yan,ZHOU Hui,LIU Xihui,TAN Fang,ZHANG Xiaoqiu,ZHANG Ronghua,SONG Xiupeng,LI Yangrui,YAN Meixin,LEI Jingchao,QIN Zhenqiang,LUO Yawei,LI Dongmei,WEI Jinju. Smut Resistant Identification and Analysis of New Sugarcane Clones of Guitang[J]. Chinese Journal of Tropical Crops, 2020, 41(2): 333-338.

Figures/Tables 1

References 12

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			新植New plant				宿根Ratoon
品系 Clones	亲本组合 Parents	处理 Treatment	最高发病率 Maximum incidence/%	抗性级别Resistance grade	抗性类型Resistance types	潜伏期Incubation period/d	最高发病率Maximum incidence /%	抗性级别Resistance grade	抗性类型Resistance types	新宿对比Comparison of new plant and ratoon	综合抗性水平Comprehensive resistance level
桂糖12-765 GT12-765	RB83-5089×桂糖02-901	人工接种	8.59	3	R	63	7.03	2	R	+1	R
桂糖12-765 GT12-765	RB83-5089×桂糖02-901	自然发病	0	1	HR	-	3.81	1	HR	0
桂糖12-762 GT12-762	桂糖97-182×粤糖91-976	人工接种	20.17	5	MS	46	36.76	6	S	-1	S
桂糖12-762 GT12-762	桂糖97-182×粤糖91-976	自然发病	4.17	2	R	63	13.26	3	R	-1
桂糖12-2425 GT12-2425	桂糖94-119× ROC23	人工接种	18.97	5	MS	63	44.98	7	S	-2	S
桂糖12-2425 GT12-2425	桂糖94-119× ROC23	自然发病	6.32	2	R	63	16.81	4	MR	-2
桂糖12-2476 GT12-2476	粤糖85-177×桂糖73-167	人工接种	12.07	4	MR	63	17.24	4	MR	0	MR
桂糖12-2476 GT12-2476	粤糖85-177×桂糖73-167	自然发病	0.85	1	HR	115	2.47	1	HR	0
桂糖12-2004 GT12-2004	科5×桂糖02-901	人工接种	9.68	4	MR	78	17.39	4	MR	0	MR
桂糖12-2004 GT12-2004	科5×桂糖02-901	自然发病	0	1	HR	-	0.90	1	HR	0
桂糖12-917 GT12-917	桂糖02-208×粤糖00-236	人工接种	26.58	6	S	46	22.57	5	MS	+1	S
桂糖12-917 GT12-917	桂糖02-208×粤糖00-236	自然发病	0	1	HR	-	4.46	1	HR	0
桂糖12-2262 GT12-2262	桂糖04-107×桂糖04-120	人工接种	2.91	2	HR	115	6.60	2	R	0	R
桂糖12-2262 GT12-2262	桂糖04-107×桂糖04-120	自然发病	0	1	HR	-	8.53	2	R	-1
桂糖12-162 GT12-162	粤糖94- 128×农林8	人工接种	13.25	5	MS	46	8.05	2	R	+3	MS
桂糖12-162 GT12-162	粤糖94- 128×农林8	自然发病	0	1	HR	-	4.88	1	HR	0
ROC22	ROC5号× 69-463	人工接种	13.00	5	MS	46	37.36	6	S	-1	S
ROC22	ROC5号× 69-463	自然发病	6.35	2	R	63	41.54	7	S	-5

			新植New plant				宿根Ratoon
品系 Clones	亲本组合 Parents	处理 Treatment	最高发病率 Maximum incidence/%	抗性级别Resistance grade	抗性类型Resistance types	潜伏期Incubation period/d	最高发病率Maximum incidence /%	抗性级别Resistance grade	抗性类型Resistance types	新宿对比Comparison of new plant and ratoon	综合抗性水平Comprehensive resistance level
桂糖12-765 GT12-765	RB83-5089×桂糖02-901	人工接种	8.59	3	R	63	7.03	2	R	+1	R
桂糖12-765 GT12-765	RB83-5089×桂糖02-901	自然发病	0	1	HR	-	3.81	1	HR	0
桂糖12-762 GT12-762	桂糖97-182×粤糖91-976	人工接种	20.17	5	MS	46	36.76	6	S	-1	S
桂糖12-762 GT12-762	桂糖97-182×粤糖91-976	自然发病	4.17	2	R	63	13.26	3	R	-1
桂糖12-2425 GT12-2425	桂糖94-119× ROC23	人工接种	18.97	5	MS	63	44.98	7	S	-2	S
桂糖12-2425 GT12-2425	桂糖94-119× ROC23	自然发病	6.32	2	R	63	16.81	4	MR	-2
桂糖12-2476 GT12-2476	粤糖85-177×桂糖73-167	人工接种	12.07	4	MR	63	17.24	4	MR	0	MR
桂糖12-2476 GT12-2476	粤糖85-177×桂糖73-167	自然发病	0.85	1	HR	115	2.47	1	HR	0
桂糖12-2004 GT12-2004	科5×桂糖02-901	人工接种	9.68	4	MR	78	17.39	4	MR	0	MR
桂糖12-2004 GT12-2004	科5×桂糖02-901	自然发病	0	1	HR	-	0.90	1	HR	0
桂糖12-917 GT12-917	桂糖02-208×粤糖00-236	人工接种	26.58	6	S	46	22.57	5	MS	+1	S
桂糖12-917 GT12-917	桂糖02-208×粤糖00-236	自然发病	0	1	HR	-	4.46	1	HR	0
桂糖12-2262 GT12-2262	桂糖04-107×桂糖04-120	人工接种	2.91	2	HR	115	6.60	2	R	0	R
桂糖12-2262 GT12-2262	桂糖04-107×桂糖04-120	自然发病	0	1	HR	-	8.53	2	R	-1
桂糖12-162 GT12-162	粤糖94- 128×农林8	人工接种	13.25	5	MS	46	8.05	2	R	+3	MS
桂糖12-162 GT12-162	粤糖94- 128×农林8	自然发病	0	1	HR	-	4.88	1	HR	0
ROC22	ROC5号× 69-463	人工接种	13.00	5	MS	46	37.36	6	S	-1	S
ROC22	ROC5号× 69-463	自然发病	6.35	2	R	63	41.54	7	S	-5

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