MITOTIC CHARACTERS OF ZEA MAYS L. cv. SHAN PYAUNG AND LAY TAN PYAUNG IN SHAN STATE
Abstract
- The two cultivars of Zea mays L., Shan pyaung and Lay tan pyaung were observed to determine the karyotype analysis. These samples were supported by Seed Bank; Department of Agricultural Research, Nay Pyi Taw, Yezin. The somatic chromosome number of studied cultivars was 2n=20. The karyotype formulae were varied, 1 ST +1 SM* + 1 SM + 7 M was found in cv. Shan pyaung and 10 M in cv. Lay tan pyaung. A pair with secondary constriction or satellite submedian chromosome was observed in chromosome number 1 (SM1) of cv. Shan pyaung. In cv. Shan pyaung, the longest chromosome with 4.71 µm and the smallest chromosome with 2.18 µm, while the 4.40 µm of longest chromosome and 2.25 µm of smallest chromosome were observed in cv. Lay tan pyaung. The two studied cultivars were significantly different in morphology, karyotypic formula, chromosome group and size. The present study was elucidated to understand the number, morphology of chromosomes, and also beneficial for further research in cytogenetics concern with Zea mays L.
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Year
- 2022
Author
-
Su May Naung
Subject
- Chemistry, Physics, Zoology, Botany and Marine Science, Geology
Publisher
- Myanmar Academy of Arts and Science (MAAS)