CPPU and BA, with and without pollination, affect set, growth, and quality of muskmelon fruit
CPPU and BA, with and without pollination, affect set, growth, and quality of muskmelon fruit
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DOI：
10.21273/hortsci.35.5.868
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发表时间：
2000-08-01
期刊：
影响因子：
1.9
通讯作者：
Kondo, S
中科院分区：
文献类型：
--
作者：
Hayata, Y;Niimi, Y;Kondo, S
将CPPU和BA溶液分别施用于授粉和不授粉的甜瓜花子房，研究其对坐果、生长和含糖量的影响。CPPU处理增加了有籽和无籽甜瓜的坐果量。即使在低浓度下，CPPU对有籽甜瓜的结实也有很强的影响。在无籽甜瓜中，施用10 mg.L-1的CPPU诱导100%单性果实；浓度越低，效果就越差。BA处理增加了有籽甜瓜的结实，但在没有授粉的情况下不是特别有效。在花后的前10天，CPPU对果实生长有促进作用，但在花后8 ~ 13天，其生长速度低于对照组。CPPU处理对种子果实可溶性固形物（SS）含量影响不大。无籽果实中SS含量显著低于有籽果实；这种差异在胎盘中比在中果皮中更大。有籽和无籽水果的蔗糖水平始终高于葡萄糖和果糖水平。高浓度CPPU可降低无籽水果胎盘中的蔗糖水平。这些结果表明，种子在甜瓜发育后期的糖积累和果实生长中起着重要的作用。所用化学名称：[1-（2-氯-4-吡啶基）-3-苯脲](CPPU)；6-benzylaminopurine (BA)。
Solutions of CPPU and BA were applied to ovaries of melon (Cucumis melo) flowers with or without pollination, and the effects on fruit set, growth, and sugar content were investigated. Treatment with CPPU increased fruit set in both seeded and seedless melons. Even at low concentrations, CPPU had a strong effect on fruit set in the seeded melons. In seedless melons, CPPU induced 100% parthenocarpic fruit set when applied with 10 mg.L-1; lower concentrations were much less effective. Treatment with BA increased fruit set in seeded melons, but was not particularly effective in the absence of pollination. During the first 10 days after anthesis, CPPU promoted fruit growth, but between 8 and 13 days after anthesis, the growth rate was lower than in the controls. Treatment with CPPU had little effect upon soluble solids (SS) levels in seeded fruit. SS content tvas significantly lower in seedless than in seeded fruit; this difference was larger in the placenta than in the mesocarp, Sucrose levels of both seeded and seedless fruits were consistently higher than glucose and fructose levels. High concentrations of CPPU reduced sucrose levels in the placenta of seedless fruit. These results indicate that seeds play an important role in sugar accumulation and melon fruit growth during later stages of development. Chemical names used: [1-(2-chloro-4-pyridyl)-3-phenylurea] (CPPU); 6-benzylaminopurine (BA).