ABSTRACT
<p><b>OBJECTIVE</b>To study the genetic diversity of pollen grains morphologies of Pinellia ternata in different populations and supply palynological evidences for further research.</p><p><b>METHOD</b>Pollen exine ultrastructure were compared for 18 populations growing under in the same environment by means of scanning electron microscope(SEM).</p><p><b>RESULT AND CONCLUSION</b>Big difference was found in pollen size among populations of P. ternata: the mean value of seventeen populations of P. ternata with bulbils was 17.42 microm x 14.86 microm, the biggest of populations originated from Jangyan city is 20.43 micromx 18.16 microm, but the least originated from Peixian County is only 15.23 microm x 12.82 microm; the size of populations without bulbils originated from Linguo Temple side was only 13.23 microm x 11.98 microm and far less than of all populations with bulbils. The pollen surface of all populations sticks out with spines, varying in size and density, the base and top part of spinules was different among populations. The pollen grains patterns of germination apertures of P. ternata was likely to have colpate cover.</p>
Subject(s)
China , Genetic Variation , Pinellia , Genetics , Plants, Medicinal , Genetics , Pollen , GeneticsABSTRACT
<p><b>OBJECTIVE</b>To distinguish female and male plants of Gynostemma pentaphyllum quickly and accurately in the stage of seedling and to understand the relation between sex differentiation and endogenous plant hormone.</p><p><b>METHOD</b>Stained methods of BTB and enzyme linked immuno-sorbent Assay were used.</p><p><b>RESULT</b>10 Hours after being dyed, the liquid extract of female plants turned into yellow, while extract of male ones turned green. There were obvious differences on iPAs and GA(1 + 3) contents but no differences on IAA and ABA contents between male and female plants during the stages of seedling and vegetative growth.</p><p><b>CONCLUSION</b>BTB can be used for distinguishing female and male plants and there were a certain relation between sex and endogenous plant hormones.</p>