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以5年生苹果烟富3/M26/平邑甜茶为试材,研究了萘乙酸(NAA)、乙烯及6–苄基腺嘌呤(6-BA)对坐果和~(13)C、~(15)N利用分配的影响。结果表明:在中心果直径5 mm时(盛花后14 d)喷施10mg·L~(-1) NAA和600 mg·L~(-1)乙烯利的植株坐果率显著低于对照,而喷施100 mg·L~(-1) 6-BA的植株坐果率与对照差异不显著;NAA和乙烯利处理的植株~(13)C和~(15)N分配率规律一致,其果实~(13)C分配率分别为1.11%和1.22%,~(15)N分配率分别为0.39%和0.33%,显著低于对照(9.12%和7.29%),而根系和枝~(13)C分配率和~(15)N分配率显著高于对照;NAA和乙烯利处理的植株Ndff值表现规律一致,提高了叶片、根系和枝对~(15)N的征调能力,降低果实对~(15)N的征调能力;与对照相比,NAA和乙烯利处理的植株~(15)N利用率显著增加了2.35和2.37个百分点,促进了根系、叶片和枝的生长和对氮同化物的征调能力,6-BA处理与对照差异不显著。
The effects of NAA, ethylene and 6-BA on fruit setting and ~ (13) C, ~ (15) ) N uses the effect of allocation. The results showed that the fruit setting rate of 10 mg · L -1 NAA and 600 mg · L -1 Ethephon sprayed at the center of 5 mm in diameter (14 d after full bloom) was significantly lower than that of the control There was no significant difference in the fruit setting rate between the plants treated with 100 mg · L -1 of 6-BA and the control. The distribution rates of ~ (13) C and ~ (15) N of NAA and ethephon were the same, 13) C were 1.11% and 1.22%, respectively, and the distribution rates of ~ (15) N were 0.39% and 0.33%, which were significantly lower than those of the control (9.12% and 7.29% And N (15) N allocation rates were significantly higher than that of the control. The Ndff values of NAA and ethephon-treated plants were consistent, which increased the recruitment of 15, N and decreased the activity of ~ (15) N Compared with the control, NAA and ethephon significantly increased the utilization of ~ (15) N in plants by 2.35% and 2.37%, respectively, which promoted the growth of roots, leaves and branches and their ability to recruit nitrogenous compounds.6 -BA treatment and control difference was not significant.