Abstract
This paper deals with the details variation of petal venation in Kallstroemia pubescens of the family Zygophyllaceae. In the present study, from a pool of 100 petals, 40 petals were selected randomly to observe the variation of venation patterns of petals in different flowers of same species collected from different population of the same ecological area. All the 40 petals examined, as per Foster’s classification, shows various type of anastomoses. Detailed study reveals that after the entry of a single vain in a petal, it divided into two costals and one median. Actually anastomosis takes place between the sister’s branches of the costal or between a branch of the costal and a branch of the medion. Present observation on the anastomosis of the petal venation of the K. pubescens is clearly fits with the study of Foster (1968). At the basal region of petal, Type-I(35.2%) and Type-II(35.2%) are more prevalent, than Type-III (5.8%), Type-VI (5.8%) and Type-V (17.5%).At the middle region of petal, Type-II (47.56%) is more prevalent than Type-I (17.07%), Type-V (13.41%), Type-III (13.41%), Type-IV (4.8%) and Type-VI (3.65%). At the distal region, Type-II (44.7%) is more prevalent than Type-III (33.33%), Type-I (10.41%), Type-V (8.33 %), Type-VI (2.08 %) and Type-IV (1.04 %).
Highlights
The vasculature pattern of petal is commonly known as petal venation
The study of petal venation received the attention of many workers in different times in tracing phylogeny after the remark that petal venation shows diversity (Melville, 1969; Banerjie, 1976; Arnott and Tucker, 1963).Petal venation of irregular flower has been carried many workers (Datta and Saha, 1968; Subramanyam and Nair, 1973; Gupta, 1982), whereas petal venation of regular corolla has been documented by many other workers
Some of the workers have studied the petal venation of some taxa
Summary
The vasculature pattern of petal is commonly known as petal venation. The study of petal venation received the attention of many workers in different times in tracing phylogeny after the remark that petal venation shows diversity (Melville, 1969; Banerjie, 1976; Arnott and Tucker, 1963).Petal venation of irregular flower has been carried many workers (Datta and Saha, 1968; Subramanyam and Nair, 1973; Gupta, 1982), whereas petal venation of regular corolla has been documented by many other workers Melville (1969), Foster (1971), Banerjie (1976), Jana and Mukherjee (2013) and Jana, Saha and Mukherjee (2013), have done some contribution regarding the petal venation in different taxa of Angiosperms. The randomly selected forty petals out of 100 petals from different plants of the same species of K. pubescens, have been taken for this study. The genus has 17 species throughout the world and is usually present in Tropical and Worm America (Mabberley, 2008) and in USA, Costa Rica, Jamaica, Peru, Colombia, Venezuela, India etc. This taxa has not been included in the “Flora of British. K. pubescens, which indicates the evolutionary status of this taxa
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