ISHS Acta Horticulturae 1297: XXX International Horticultural Congress IHC2018: V International Symposium on Plant Genetic Resources and International Symposium on Applied Functional Molecular Biology
Morphological characterization and SEM analysis of intervarietal variability in water chestnut (Trapa natans var. bispinosa Roxb.) collections |
| Authors: | M. Gond, D.H. Dwivedi, N. Singh, S.K. Dwivedi |
| Keywords: | water chestnut, Trapa, natans bispinosa, variability, stomatal anatomy, scanning electron microscopy |
| DOI: | 10.17660/ActaHortic.2020.1297.25 |
| Abstract:
Water chestnut (Trapa natans var. bispinosa Roxb.), growing ubiquitously as an edible, aquatic angiosperm in marginal/wasteland waterlogged areas belonging to the family Trapaceae, is a valuable underutilized crop. Based on earlier studies, a survey was conducted in eight blocks of three district in Central Uttar Pradesh and in the adjoining areas during the months of August-November, 2016, for collection of 20 superior morphotypes on the basis of yield and fruit quality. One single plant from each of the morphotypes identified was transplanted and established in one pond each, in the month of June in the following year, on the experimental field of Department of Horticulture, Babasaheb Bhimrao Ambedkar University, Lucknow, (Uttar Pradesh), India for further studies. Genetic variation among the 20 accessions collected were assessed at the phenotypic level. The variability in number of leaves per rosette was observed to range from 21.67 to 29.67, leaf length 11.93 to 19.78 cm, length of leaf lamina 4.20 to 6.44 cm, width of leaf lamina 4.22 to 8.78 cm, petiole length 7.02 to 13.34 cm, pulvinus length 1.60-3.17 cm, pulvinus diameter 3.84 to 15.94 mm, number of rosettes 3.67 to 12.17, rosette spread (north-south) 22.10 to 32.83 cm, rosette spread (east-west) 20.72 to 32.18 cm, number of fruit 11.67 to 21.50. The variability in accessions was further verified through scanning electron microscopy for stomatal anatomy of water chestnut leaves for length of stomata which varied from 11.48 to 17.43μm, width of stomata 4.68 to 8.05μm, pore length of stomata 6.64 to 13.52 μm and pore width of stomata 1.40 to 6.56 μm. Water chestnut fruit is rich in phytonutrients with medicinal properties although it is highly neglected. Identification of superior cultivars would give an impetus to cultivation of the crop which has potential for being developed as an alternative food. | |
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