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Selection and Analysis of Disease-Resistant Germplasms in Hybrid F1 Generations of Rubber Tree
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Boxun LI1, 2, Guixiu HUANG1, *, Ligang HE3, Jimiao CAI1, Yanli FENG1, Wencai YU3, Zhongliang LIU3
Chinese Journal of Tropical Crops | 2023, 44(11) : 2281 - 2291
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Chinese Journal of Tropical Crops | 2023, 44(11): 2281-2291
• Germplasm Resources, Genetics & Breeding •
Selection and Analysis of Disease-Resistant Germplasms in Hybrid F1 Generations of Rubber Tree
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Boxun LI1, 2, Guixiu HUANG1, *, Ligang HE3, Jimiao CAI1, Yanli FENG1, Wencai YU3, Zhongliang LIU3
Affiliations
  • 1.Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Integrated Pest Management on Tropical Grops, Ministry of Agriculture and Rural Affairs/Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
  • 2.College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan 650201, China
  • 3.Yunnan Institute of Tropical Crops, Jinghong, Yunnan 666100, China
Published: 2023-11-25 doi: 10.3969/j.issn.1000-2561.2023.11.017
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Corynespora leaf fall disease is one of the most severe leaf diseases in major rubber planting countries worldwide, which can cause serious yield and economic losses. The selection, creation, and utilization of resistant germplasms are the most effective prevention and control strategies for this disease. This study evaluated the disease resistance of 821 F1 populations from three hybrid combinations Yunyan 277-5×IAN 873, RRIC103×Reyan 8-79, Yunyan 277-5×Reken 525 and identified the level of disease resistance. Based on the evaluation results of disease resistance, 32 candidate F1 generation individual plants were selected from two hybrid combinations that conform to normal distribution. Using three divergent clusters of Corynespora cassiicola and two evaluation methods to identify the resistant candidate F1 clone seedlings, five resistant germplasms were ultimately obtained by measuring the activity of defense enzymes and analyzing the expression characteristics of disease-related genes in five new resistant germplasms. Further investigation confirmed that the interaction relationship between five new resistant germplasms and multi host C. cassiicola during the infection process. This study provides excellent germplasm materials and a theoretical support for the early selection, cultivation, and utilization of resistant germplasms for the disease resistance of Corynespora leaf fall disease.

rubber tree  /  Corynespora leaf fall disease  /  hybrid F1 generations  /  selection  /  disease resistance
Boxun LI, Guixiu HUANG, Ligang HE, Jimiao CAI, Yanli FENG, Wencai YU, Zhongliang LIU. Selection and Analysis of Disease-Resistant Germplasms in Hybrid F1 Generations of Rubber Tree[J]. Chinese Journal of Tropical Crops, 2023 , 44 (11) : 2281 -2291 . DOI: 10.3969/j.issn.1000-2561.2023.11.017
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Year 2023 volume 44 Issue 11
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Article Info
doi: 10.3969/j.issn.1000-2561.2023.11.017
  • Receive Date：2023-07-03
  • Online Date：2026-03-05
  • Published：2023-11-25
Article Data
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History
  • Received：2023-07-03
  • Revised：2023-09-07
Funding
Affiliations
    1.Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Integrated Pest Management on Tropical Grops, Ministry of Agriculture and Rural Affairs/Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
    2.College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan 650201, China
    3.Yunnan Institute of Tropical Crops, Jinghong, Yunnan 666100, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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