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Effect of Paclobutrazol on Distribution Relation Between Different Organs of Japonica Rice under Direct Seeding Model
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作者 zenghong li Chengguo JIANG +1 位作者 Cuiping SHEN Chenchao XU 《Agricultural Science & Technology》 CAS 2017年第1期12-14,55,共4页
Three japonica rice varieties were soaked in 110 mg/L paclobutrazol solution for 48 h and then directly seeded, and seeds soaked with clean water were used as a control group. The analysis of dry weights of various or... Three japonica rice varieties were soaked in 110 mg/L paclobutrazol solution for 48 h and then directly seeded, and seeds soaked with clean water were used as a control group. The analysis of dry weights of various organs and agronomic traits showed that soaking of japonica seeds with paclobutrazol had little impact on the correlation between dry weights of various organs, but there were still significant differences between cultivars. The correlation coefficients between lengths of the first and second nodes with filled grain weight changed from 0.024 and 0.056 in the CK to -0.116 and -0.042 correspondingly after presoaking with paclobutrazol. Therefore, paclobutrezol reduces the effect of stem-sheath weight on filled grain weight, and as a result, photosynthetic product could not be effectively transported in maturation stage of rice. 展开更多
关键词 CORRELATION PACLOBUTRAZOL Reproductive allocation ORGAN Dry weight
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