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主要观察了气孔在四季秋海棠营养器官和繁殖器官上的分布和发育情况,并分别对叶片和翅上气孔簇大小、气孔簇密度等指标的相关性进行了研究、结果表明:在叶片的下表皮、雌花和雄花的花被片、苞片、小苞片和翅上有气孔分布,而在茎、花梗上却未见气孔分布.叶片下表皮和翅上气孔通常成簇分布.在叶片的下表皮,气孔簇大小与气孔簇密度呈显著的负相关(P<0.05);气孔簇密度与叶片长度呈极显著的负相关(P<0.01).而翅上的气孔簇密度、气孔簇大小与子房长度无显著相关性(P>0.05).在四季秋海棠中,不同器官表皮的气孔簇大小是不同的,这可能与生理功能的不同有关.
The distribution and development of stomata on vegetative organs and reproductive organs of Begonia septempunctata were observed. The correlations between stomatal cluster size and stomatal density were studied respectively. The results showed that in the lower epidermis There were stomata on the perianth, bracts, bracteoles and wings of female flowers and male flowers, but no stoma distribution on stems and pedicels.The stomata and the upper stomatal foraminifera usually distributed in the leaves There was a significant negative correlation between epidermis and stomatal cluster size and stomatal density (P <0.05), and stomatal cluster density had a significantly negative correlation with leaf length (P <0.01), while stomatal cluster density, stomatal cluster size and There was no significant correlation between ovary length (P> 0.05) .In four seasons Begonia, stomatal cluster sizes of different organs were different, which may be related to different physiological functions.