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首页> 外文期刊>日本作物學會紀事 >Histo-Cytological Researches on Translocation and Ripening in Rice Ovary : I. Histological changes and transfer pathways in the developing ovary
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Histo-Cytological Researches on Translocation and Ripening in Rice Ovary : I. Histological changes and transfer pathways in the developing ovary

机译：水稻卵巢易位和成熟的术语细胞学研究：I。发展卵巢中的组织学变化和转移途径

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Developing process of rice ovary, var. Koshihikari, was observed with microscope by semi-thin sections, prepared through double fixations of glutaraldehyde and osmium tetroxide and embedded in Spurr's resin. 1. The accumulation of starch grains made rapid progress in the endosperm during 8-22 days after flowering, and the accumulation almost finished in each part, the centre in 15 days, the dorsal side in 15-20 days, the ventral side in 20 days, the lateral sides in 20-25 days and the lateral-dorsal sides in 25-30 days after flowering successively. 2. The dorsal vascular bundle fell into deformation about 30 days after flowering. 3. In the nucellar epidermal cells of the dorsal and lateral sides, dense cytoplasm, numerous small vacuoles and fibrous structure (arrows) were observed 6 days after flowering, and subsequently the cytoplasm became dilute or transparent but nucleus and osmiophilic globules on and after 7-10 days. The nucellar epidermis degenerated 20 days after flowering in the ventral side, 25 days in the lateral sides and 30 days in the dorsal side successively. The developing aspects in the nucellar epidermis, as mentioned above, are thought to correspond closely with the accumulating process of starch grains in the endosperm. 4. The nucellus inside the nucellar epidermis was compressed to a thin layer 5 days after flowering, however, the degeneration in the dorsal side continued till 20-25 days and survived four or five layers of the nucellar projection. As the cell walls of the degenerated nucellus are stained purple-blue with toluidine blue O, the walls may easily let solutes pass through. 5. About the time when the proaleurone cells ceased to proliferate 7 days after flowering, started off the accumulation of lipid and the formation of aleurone vacuoles, and the globoids could be found about 14 days after flowering. The aleurone cells had thick walls with no wall-ingrowth, however, stained purple-blue with toluidine blue O. 6. The increase of cell number in the endosperm reached to the end 7 or 8 days after flowering, and as seen in Figs. 6 and 9, each cell of the endosperm had foamy vacuoles and a nucleus in the centre. Thereafter, the foamy structure of vacuoles disappeared as increase of starch grains. 7. It is supposed that, after migrating from the sieve elements of dorsal vascular bundle to the nucellar projection, solutes transfer to the endosperm by two pathways. One is "dorsal pathway" on which the solutes straightly transfer from nucellar projection into endosperm, and the other is "nucellar epidermis pathway" on which the solutes transfer into endosperm via nucellar epidermis.
机译：稻卵巢的发展过程，var。通过半薄切片用显微镜观察Koshihikari，通过双重固定通过戊二醛和十颗氧化锇并嵌入孢子树脂中。 1.淀粉粒的积累在开花后8-22天内在胚乳中取得了快速进展，并在每个部分的积累，中心在15天内，背侧15-20天，腹侧20天，侧面在20-25天内和横向背侧连续25-30天后。 2.在开花后30天内，背部血管束变为变形。 3.在开花后6天观察到背侧和侧面的Nucellar表皮细胞，致密细胞质，致密的细胞质，众多小型液泡和纤维结构（箭头），随后细胞质变为稀释或透明，但核和渗透核状球丸在7之后-10天。在腹侧开花后20天退化，在侧面25天和侧面连续30天后退化20天。如上所述，Nucellar表皮中的开发方面被认为与胚乳中淀粉颗粒的累积过程紧密相对应。 4.无核心表皮内的核心被压制到开花后5天的薄层，然而，背侧的变性持续到20-25天，并存活了四层或五层核心投影。随着退化核心的细胞壁用甲苯胺蓝o染色紫色 - 蓝色，壁可以容易地使溶质通过。 5.关于Proaleurone细胞在开花后7天停止增殖的时间开始，开始脂质的积累和α0urone真空的形成，并且球状素可以在开花后约14天内发现。葡萄耳细胞具有厚壁，无壁 - 成根，然而，用甲苯胺蓝O染色紫色蓝色。6.胚乳中的细胞数的增加达到了开花后7或8天的末端，并且如图1和2所示。如图6和9所示，胚乳的每个细胞在中心具有泡沫状液泡和核。此后，随着淀粉颗粒的增加，泡沫的泡沫结构消失。如图7所示，假设在从血管束的筛子元素迁移到Nucellar投影之后，用两个途径溶解于胚乳的转移。一种是“背部途径”，其中溶质从Nucellar投影直接转移到胚乳中，另一个是“Nucellar表皮途径”，其中通过Nucellar表皮溶解成胚乳。

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