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以热导二环系“87”作为亲本之一 ,与不同类群测验系杂交 ,所配组合均表现出较强的杂种优势 ,尤其豫单 870 3即综 3× 87- 1优势最强。 1993～ 1996年 ,在省内外区试、生产示范和多点试验中 ,豫单 870 3的产量连年排名第一。该组合表现高产、优质、抗病、持绿期长 ,是目前替换丹玉 13的理想品种。研究结果表明 ,利用热导二环系组配强优势组合是利用热带资源快出品种的有效途径。
With heat-conducting bicyclic “87” as one of the parents, crosses with different groups of test strains showed strong heterosis in combination, especially Yudan 8703, the most comprehensive 3 × 87-1. From 1993 to 1996, the output of Yudan 870 3 ranked the first place in successive years in the pilot, production demonstration and multi-point tests in the province. The combination of high yield, high quality, disease resistance, holding a long green period, is the ideal replacement Danjade 13 varieties. The results show that the use of heat-conducting bicyclic ring with strong combination is the use of tropical resources to speed up the varieties of effective ways.