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    TAN Zhong-wen 1,LIANG Ji-nan 1,CHEN Jian-ping 2,CHEN Pei-shou 1. Studies on the Relationship Among Physiological Characters of Seedling Stage , Cane Juice Sucrose , and Cane Yield in Sugarcane Genotypes[J]. Journal of South China Agricultural University, 2002, 23(1): 1-4. DOI: 10.7671/j.issn.1001-411X.2002.01.001
    Citation: TAN Zhong-wen 1,LIANG Ji-nan 1,CHEN Jian-ping 2,CHEN Pei-shou 1. Studies on the Relationship Among Physiological Characters of Seedling Stage , Cane Juice Sucrose , and Cane Yield in Sugarcane Genotypes[J]. Journal of South China Agricultural University, 2002, 23(1): 1-4. DOI: 10.7671/j.issn.1001-411X.2002.01.001
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    Studies on the Relationship Among Physiological Characters of Seedling Stage , Cane Juice Sucrose , and Cane Yield in Sugarcane Genotypes

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    • The physiological characters of leaf in seedling stage of 8 sugarcane genotypes were studied. The results showed that there was a very significant positive correlation (0.96) between relative growth rate (RGR) and net assimilation rate (NAR) during seedling stage. Both RGR and NAR had a negative correlation with cane juice sucrose and positive correlation with cane yield. Path analysis indicated that the NAR had directly positive contributions to cane juice sucrose and cane yield. The results showed that these physiological characters of seedling, such as higher value of NAR, LAR and chlorophyll a/b, can be used as indirect selection indices for higher yield and higher sucrose content of cane.
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