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首页> 外文期刊>Acta Horticulturae >A pseudoembryo highly stainable with toluidine blue O may induce fruit growth of parthenocarpic tomato.
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A pseudoembryo highly stainable with toluidine blue O may induce fruit growth of parthenocarpic tomato.

机译：甲苯胺蓝O高度可染色的假胚可能诱导单性结实番茄的果实生长。

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Pseudoembryos were formed in the parthenocarpic tomato fruits of a genetic parthenocarpic cultivar 'Severianin' and an economic cultivar treated with auxin. We investigated histochemically the relationship between pseudoembryo development and fruit growth. Enlarging of inner integument cells was defined as the beginning of pseudoembryo formation. The non-parthenocarpic tomato cultivar 'Kyouryoku-Kyokkou' emasculated before anthesis began to show fruit growth immediately after the treatment with 4CPA at 15 mg/litre at 0, 5 or 10 days after anthesis. In the emasculated plants of this cultivar without 4CPA treatment, inner integument cells enlarged but were stained poorly with toluidine blue O. However, when treated with 4CPA, the innermost integument cells stained well and multiplied to form pseudoembryo at 5-10 days after the treatment. In parthenocarpic tomato line 'MPK-1', offspring of 'Severianin', the pseudoembryo formed before anthesis and developed as the stage of the ovary advanced. Another parthenocarpic line 'HOK-12', offspring of 'Severianin', usually set very small parthenocarpic fruits. In this line, the integument cells stained poorly and enlarged without cell division from 14 to 80 days after anthesis. The ovaries treated with 4CPA at 60 mg/litre at anthesis reached to 2.5-3 mm in diameter 10 days later and then most of them stopped growing. In the ovary that stopped growing, there were the pseudoembryos consisting of some enlarged cells with poor stainability. In a few ovaries that continued growth, well-developed pseudoembryos were observed at 21 days after 4CPA treatment. In the ovaries of dropped fruits, there was no trace of pseudoembryo development. It was suggested that the well-developed pseudoembryo was essential for the growth and setting of parthenocarpic fruits.
机译：假胚在遗传单性结实品种“ Severianin”和经生长素处理的经济性品种的单性结实番茄果实中形成。我们组织化学研究假胚发育与果实生长之间的关系。内珠被细胞的扩大被定义为假胚形成的开始。在开花后0、5或10天，用15 mg / L的4CPA处理后，在开花前立即去雄的非果皮番茄品种'Kyouryoku-Kyokkou'消失了。在未经4CPA处理的该去势品种的去雄植物中，内被膜的细胞增大，但被甲苯胺蓝O染色较差。但是，当用4CPA处理时，最内在的膜被细胞染色良好，并在处理后5-10天繁殖形成假胚。在单性结实番茄系'MPK-1'中，'Severianin'的后代中，假胚在花期前形成，并随着卵巢的成熟而发育。另一种单性结实系“ HOK-12”，即“ Severianin”的后代，通常结实很小的单性结实果实。在该系中，花后14至80天，被膜的细胞染色较差，并且没有细胞分裂地扩大了。花期用60 mg / L 4CPA处理的卵巢在10天后直径达到2.5-3 mm，然后大部分停止生长。在停止生长的卵巢中，存在由一些染色性较差的扩大细胞组成的假胚。在一些持续生长的卵巢中，在4CPA治疗后21天观察到发育良好的假胚。在掉果的卵巢中，没有假胚发育的痕迹。有人提出，发达的假胚对于单性结实果实的生长和结实至关重要。

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