文献类型： 外文期刊

作者： Wang, Li-Ping ² ; Jackson, Phillip A. ¹ ; Lu, Xin ¹ ; Fan, Yuan-Hong ² ; Foreman, John W. ¹ ; Chen, Xue-Kuan ² ; Deng, ¹ ;

作者机构： 1.CSIRO Plant Ind, Davies Lab, Townsville, Qld 4814, Australia

2.Yunnan Acad Agr Sci, Yunnan Sugarcane Res Inst, Kaiyuan 661600, Yunnan, Peoples R China

3.Guangzhou Sugar Ind Res Inst, Guangzhou 510316, Guangdong, Peoples R China

4.CSIRO Plant Ind, Queensland Biosci Precinct, St Lucia, Qld 4067, Australia

期刊名称：CROP SCIENCE （ 影响因子：2.319； 五年影响因子：2.631 ）

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收录情况： SCI

摘要： Saccharum spontaneum L. has contributed important traits to modern sugarcane (S. spp. L.) cultivars such as adaptation to environmental stress and ratooning ability. There is interest in further use of S. spontaneum in sugarcane improvement for sugar or energy-from-biomass production systems. In this study, parents and progeny from 43 biparental crosses between sugarcane and S. spontaneum clones were evaluated in field trials in China and Australia, along with several commercial cultivars. The S. spontaneum clones were from diverse geographic origins in China. Measurements were made on biomass composition (% dry matter, brix and pol in juice and cane, purity, fiber content) and yield components. Moderate to high (>0.7) broad-sense heritabilities and high genetic variances were observed for most traits. About half the total genetic variance was retained as among-family variance for the biomass composition traits, but this proportion was generally <25% for biomass yields. Midparent values in an independent trial predicted biomass composition traits reasonably well (generally, r > 0.6), but less so for cane and biomass yield (0 < r < 0.4). Genetic correlations between performance of families evaluated in different countries were strong, providing preliminary evidence that results in one country could be used for identifying elite families in the other. Strategies for efficient development and selection of elite clones from S. spontaneum are suggested.