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Influence of Rind Hardness on Sugarcane Quality

American Journal of Plant Sciences 2013年第8期4卷 45-52页

作者： Sujeet Pratap Singh amrita nigam Ram Kushal Singh Centre for Sugarcane Biotechnology Sugarcane Research Institute U. P. Council of Sugarcane Research Shahjahanpur India School of Life Sciences Indira Gandhi National Open University New Delhi India.

Sugar recovery in a factory depends upon regular crushing and quality of varieties besides various other working parameters. Strategies for increased productivity and sugar recovery, varietal improvement can bring out through selection of parents to get maximum gains. These are governed by sugar content, fiber, rind hardness and cane yield. In order to assess the breeding value of different traits including rind hardness, study was undertaken at Sugarcane Research Institute, Shahjahanpur, during 2011-2012. Phenotypic difference and correlations among agronomic characters, basic quality characters and rind hardness in 120 segregating genotypes derived from contrast bi-parental cross (UP9530 × Co86011) of sugarcane cultivar were studied in this experiment. All the traits observed were found statistically significant among the mapping populations. The mean value of rind hardness was 5.91 with a range from 2.08 to 12.10 among 120 segregating population including their parents. Rind hardness (RHD) showed significant positive genotypic correlation with sugar yield-related traits viz;cane weight (CW, r = 0.325), cane yield (CYLD, r = 0.380) and sugar yield (SUYLD, r = 0.248). Significant negative correlation was observed for rind hardness with commercial cane sugar percent (CCS%, r = -0.388), number of millable cane (NMC, r = -0.216), hand refractometer brix %-October (HBR, r = -0.154), Brix% in juice (BR, r = -0.119) and Sucrose% in juice (SUC, r = -0.080). The simple correlation analysis showed that RHD, CW, CYLD and SUYLD showed significant positive correlation for agronomic characters, but for basic quality characters had negative correlations. Result indicated that rind hardness was found to have economically important trait due to showing significant positive and negative correlation with sugar yield and sugar content, respectively. The study also revealed that with the reduction in rind hardness, sugar recovery may increase. Present findings indicated that the rind

关键词： Rind Hardness Sugarcane Genetic Correlation Sugar Yield-Related Traits

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