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Breeding Report of a New Excellent Rubber Tree Variety Yunyan 80-1983
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Zhongliang LIU, Huajin YA, Lihua WANG, Ligang HE**
Chinese Journal of Tropical Crops | 2024, 45(11) : 2305 - 2312
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Chinese Journal of Tropical Crops | 2024, 45(11): 2305-2312
• Germplasm Resources, Genetics & Breeding •
Breeding Report of a New Excellent Rubber Tree Variety Yunyan 80-1983
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Zhongliang LIU, Huajin YA, Lihua WANG, Ligang HE**
Affiliations
  • Yunnan Institute of Tropical Crops / Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, Jinghong, Yunnan 666100, China
Published: 2024-11-25 doi: 10.3969/j.issn.1000-2561.2024.11.008
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Cold resistance and high-yielding are always the core breeding objectives of Yunnan rubber tree planting area in China. The superior clone was selected by artificial hybridization, and was systematically identified by nursery trial, advanced clonal trial and resistance test. The results showed that Yunyan 80-1983 was a fast-growing, high-yielding and early-maturing rubber tree clone which could be tapped 0.5-1 years earlier. In advanced clonal trials, the girth reached 52.7 cm in the seventh year, which was 122.6% of the control RRIM600 (43.0 cm). The dry rubber yield of 1-13 tapping year was 4.3 kg per tree and 1622.7 kg/hm2, which was 130.3% and 122.5% of the control RRIM600 (3.3 kg per tree,1324.8 kg/hm2). The cold resistance was basically equivalent to that of RRIM600, lower than that of GT1 and Yunyan 77-4. It is recommended to be planted in the low-altitude and slight cold damage zone in Yunnan. This clone would provide variety support for optimizing the variety structure, increasing the yield and output value in Yunnan and other rubber planting areas.

Hevea brasiliensis  /  superior clone  /  Yunyan 80-1983  /  variety breeding
Zhongliang LIU, Huajin YA, Lihua WANG, Ligang HE. Breeding Report of a New Excellent Rubber Tree Variety Yunyan 80-1983[J]. Chinese Journal of Tropical Crops, 2024 , 45 (11) : 2305 -2312 . DOI: 10.3969/j.issn.1000-2561.2024.11.008
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Year 2024 volume 45 Issue 11
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Article Info
doi: 10.3969/j.issn.1000-2561.2024.11.008
  • Receive Date：2024-04-01
  • Online Date：2026-06-26
  • Published：2024-11-25
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  • Received：2024-04-01
  • Revised：2024-05-09
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    Yunnan Institute of Tropical Crops / Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, 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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