水稻叶片的维管系统取决于倍性水平

P. Kostylev, E. Cherpakova, N. Yanovskaya
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摘要

本文提供了 2022-2023 年期间在温室中种植的水稻旗叶维管束系统的研究数据。研究对象是 FSBSI "ARC "Donskoy "利用雄性诱导和细胞培养方法培育的 24 个水稻样本。研究的目的是确定不同倍性水平(1n、2n、4n)的再生水稻植株旗叶维管束系统的发育程度。在研究植物叶片的维管束系统(束的数量和面积)时发现,与二倍体和四倍体样本相比,单倍体植株的维管束较小。平均束直径分别为 59.5、69.3 和 75.3 微米,束面积分别为 2815.6、3827.2 和 4540.5 微米平方米。在水稻样本的叶片中,随着倍性水平的提高,形成了更多的大小维管束。单倍体的维管束数量为 36-44,二倍体的维管束数量为 40-52,四倍体的维管束数量为 52-60。平均维管束数分别为 40.3、46.6 和 55.2。每个样本的脉序模式各不相同。在单个大脉束之间有 1 至 7 条小脉,最常见的是 4 至 6 条。因此,不同倍性水平的样本在叶片解剖结构上存在差异,这最终会影响叶片的形态和产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vascular system of rice leaves depending on ploidy level
The current paper has provided data on the study of the vascular system of flag leaves of rice plants grown in a greenhouse in the period 2022–2023. The objects of the study were 24 rice samples developed at the FSBSI “ARC “Donskoy” using the method of androgenesis and cell culture. The purpose of the work was to determine the degree of development of the vascular system of flag leaves of regenerated rice plants with different ploidy levels (1n, 2n, 4n). When studying the vascular system of plant leaves (the number and area of bundles), it was found that haploid plants had smaller vascular bundles compared to diand tetraploid samples. The average beam diameter had dimensions of 59.5, 69.3 and 75.3 µm, the area of one beam was 2815.6, 3827.2 and 4540.5 µm², respectively. In the leaves of rice samples, a larger number of small and large vascular bundles have been formed with increasing ploidy level. Their number was 36–44 in haploids, 40–52in diploids, 52–60 in tetraploids. The average number of bundles was 40.3, 46.6 and 55.2, respectively. The venation pattern was individual for each sample. Between single large bundles there are from one to seven small veins, most often 4–6 pieces. Thus, samples with different ploidy levels differ in the anatomical structure of the leaves, which ultimately affects their morphology and productivity.
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