Cytoembryological studies on Paeonia peregrina L. - Journal of Cell ...
Cytoembryological studies on Paeonia peregrina L. - Journal of Cell ...
Cytoembryological studies on Paeonia peregrina L. - Journal of Cell ...
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sac leucoplasts were seen in P. <strong>peregrina</strong>. MMC,<br />
megaspore tetrad, functi<strong>on</strong>al megaspore c<strong>on</strong>tain starch<br />
grains. They were also found in 2-, 4-, 8-nucleated<br />
embryo sac and mature embryo sac. Starch grains were<br />
located in the outer integument cells, the integumentary<br />
tapetum, the nucellus, around sec<strong>on</strong>dary nucleus and in<br />
mature embryo sac <strong>of</strong> P. tenuifolia (Dane, 1997) but<br />
<strong>on</strong>ly in the integument tapetum <strong>of</strong> P. anomala<br />
(Yakovlev, 1957). Willemse and Went (1984) reported<br />
that the embryo sacs in the majority <strong>of</strong> angiosperms<br />
lack starch grains but it is abundant in some species.<br />
Vascular bundles which are rarely found were<br />
determined in the nucellar tissue in P. <strong>peregrina</strong> and<br />
these bundles were observed to be tracheids.<br />
Acknowledgement<br />
We are greatly indebted and thankfull to Pr<strong>of</strong>. Dr. Jale<br />
Tören for providing the necessary research facilities,<br />
useful suggesti<strong>on</strong>s and encouragement and for her<br />
invaluable c<strong>on</strong>tributi<strong>on</strong> to us.<br />
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