THE INVESTIGATION OF THE ONTOGENETIC-CELLULAR TREND OF MICROTUBER FORMATION IN POTATO (SOLANUM TUBEROSUM L.)

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EBADI M.; IRANBAKHSH A.

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Paper Information

Journal: JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY) Year:2007 | Volume:16 | Issue:62/1 (BIOLOGY ISSUE) Page(s): 21-34

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Title

THE INVESTIGATION OF THE ONTOGENETIC-CELLULAR TREND OF MICROTUBER FORMATION IN POTATO (SOLANUM TUBEROSUM L.)

Author(s)

EBADI M. | IRANBAKHSH A. | Issue Writer Certificate

Keywords

TISSUE CULTUREQ3

MICROTUBERQ3

MICROTUBER ONTOGENYQ3

Abstract

The investigation of the trend in mitosis divisions and increase in the size of cells is the key to understanding how MICROTUBERs are formed out of auxiliary buds in the induce conditions. In the induced buds, meristematical cells with high cytoplasmic and nuclear stain ability expand deeper into the inner sections of the buds, whereas in noninduced buds, the area is limited to the apical region. The first signs of MICROTUBERization, observed almost simultaneously in induced buds, are the increase in the size of cortical parenchyma cells in the lower sections and in one side, and mitosis divisions in the inner sections of the meristem. The changes can be observed as of the fourth or fifth day. Most of the growth takes place in the induce medium along the length and the width of the cells. Simultaneous with the diametric growth of the MICROTUBERs, the base of the leaves on the MICROTUBERs begin their radial growth and due to the cessation of growth in lateral leaves, these locate themselves in the grooves at the base of the leaves. The cortical parenchyma cells begin forming amidon grains during their vacuolar extension at extending the internodes much earlier than pith parenchyma cells. The extension of cells in the subapical region plays an important role in the longitudinal growth of MICROTUBERs. In the first stages, the growth of MICROTUBERs results from the change in the dimensions of cortical and pith parenchyma cells, due to the reproduction of apical meristem, and later, mainly from the growth of the productive tissue in the pith parenchyma. Longitudinal growth is initially grater than the growth in diameter; however with shift in the position of vacuoles and their arrangement across rather than along the MICROTUBERs, the growth pattern begins to change and lateral growth catches on and exceeds longitudinal growth. In mature MICROTUBERs, pith parenchyma cells are larger than the cells in cortical parenchyma. The increase in the number of the cells along and across MICROTUBERs corresponds to the change in the size of the MICROTUBERs and stops when the MICROTUBERs become 7 to 8 mms.

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APA: Copy

EBADI, M., & IRANBAKHSH, A.. (2007). THE INVESTIGATION OF THE ONTOGENETIC-CELLULAR TREND OF MICROTUBER FORMATION IN POTATO (SOLANUM TUBEROSUM L.). JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), 16(62/1 (BIOLOGY ISSUE)), 21-34. SID. https://sid.ir/paper/70471/en

Vancouver: Copy

EBADI M., IRANBAKHSH A.. THE INVESTIGATION OF THE ONTOGENETIC-CELLULAR TREND OF MICROTUBER FORMATION IN POTATO (SOLANUM TUBEROSUM L.). JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)[Internet]. 2007;16(62/1 (BIOLOGY ISSUE)):21-34. Available from: https://sid.ir/paper/70471/en

IEEE: Copy

M. EBADI, and A. IRANBAKHSH, “THE INVESTIGATION OF THE ONTOGENETIC-CELLULAR TREND OF MICROTUBER FORMATION IN POTATO (SOLANUM TUBEROSUM L.),” JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), vol. 16, no. 62/1 (BIOLOGY ISSUE), pp. 21–34, 2007, [Online]. Available: https://sid.ir/paper/70471/en

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