REPRODUCTIVE BIOLOGY OF THE TROPICAL VULNERABLE SHRUB CAPPARIS SHEVAROYENSIS SUND.-RAGH. (CAPPARACEAE)

  • SOOSAIRAJ, S1*; KALA, A1; RAJA, P.1 AND BALAGURU, B2. 1.DEPARTMENT OF BOTANY, ST. JOSEPH’S COLLEGE (AUTONOMOUS), TIRUCHIRAPPALLI - 620 002, TAMILNADU. 2.DEPARTMENT OF BOTANY, JAMAL MOHAMED COLLEGE (AUTONOMOUS), TIRUCHIRAPPALLI, TAMILNADU. Corresponding author’s e-mail: pspsoosai@yahoo.co.in

Abstract

Capparis shevaroyensis Sund.-Ragh. (Capparaceae) a vulnerable shrub was studied for its phenology, flower morphology, pollen viability, stigma receptivity and seed setting. This species was found distributed in a narrow range in the Karanadamalai hills and Sirumalai hills of Eastern Ghats of Tamilnadu, India. The study reveals that it has very poor pollen germination and subsequent limited seed setting. It produces enormous number of pollens (953/anther) where all of them were viable in X-gal test. Number of fruits per flower was limited to one per inflorescence and many of the seed were found infected by insects. It has very limited population, owing to its habitat condition besides its reproductive features which further move the species to endangered condition.

References

Aigner, P.A. 2004. Floral specialization without trade-offs: optimal corolla flare in contrasting pollination environments. Ecology, 85: 2560–2569.
Balaravi, S. 1967. A cytomorphological analysis of derivatives from the hybrid Oryza sativa (L) × O. perenis ssp. Barthii. M. Sc. (Agri.) thesis, Uni. Agric. Sci., Madras.
Banu, M.B., M.Q.I. Matin, T. Hossain and M.M. Hossain. 2009. Flowering Behaviour And Flower Morphology Of Passion Fruit (Passiflora edulis Sims). Int. J. Sustain. Crop Prod. 4(4):05-07 (August 2009)
Bullock, S.H and J.A. Solis-Magallanes. 1990. Phenology of canopy trees of a tropical deciduous forest in Mexico. Biotropica, 22: 22–35.
Campbell, D.R. 1991. Effects of floral traits on sequential components of fitness in Ipomopsis aggregata. American Naturalist, 137: 713–737.
Campbell, D.R., N.M. Waser and M.V. Price. 1996. Mechanisms of hummingbird-mediated selection for flower width in Ipomopsis aggregata. Ecology, 77: 1463–1472.
Cresswell, J.E. 2000. Manipulation of female architecture of flowers reveals a narrow optimum for pollen deposition. Ecology, 81: 3244–3249.
Dafni, A. 1992. Pollination ecology: a practical approach. Oriole Press at Oxford University Press, Oxford.
Frankie, G.W., H.G. Baker and P.A. Opler. 1974. Comparative phonological studies of trees in tropical wet and dry forests in the lowlands of Costa Rica. Journal of Ecology, 62: 881-919.
Galen, C and J. Cuba. 2001. Down the tube: pollinators, predators, and the evolution of flower shape in the alpine skypilot, Polemonium viscosum. Evolution, 55: 1963–1971.
González, M.V, M. Coque and M. Herrero. 1994. Stigmatic phenols and flower receptivity in kiwi (Actinidia deliciosa). Acta Horticulture, 381: 502–505.
González, M.V, M. Coque and M. Herrero. 1995. Papillar integrity as an indicator of stigmatic receptivity in kiwifruit (Actinidia deliciosa). Journal of Experimental Botany, 46: 263–269.
Gross, C.L., D.A. Mackay and M.A. Whalen. 2000. Aggregated flowering phenologies among three sympatric legumes: the degree of nonrandomness and the effect of overlap on fruit set. Plant Ecology, 148: 13–21.
Kearns, C.A., and D.W. Inouye. 1993. Techniques for pollination biologists. Boulder CO. The University Press of Colorado, USA.
Koning, R.E. 1994. Flower Morphology. Plant Physiology Information Website. http://plantphys.info/plants_human/labpdf/flowermorph.pd
Matthew, K.M. 1983. The Flora of the Tamil Nadu Carnatic. The Rapinat Herbarium, (St. Joseph’s College, Tiruchirappalli) 5-15.
Matthew, K.M. 1983. The Flora Palani Hills. The Rapinat Herbarium, (St. Joseph’s College, Tiruchirappalli).
Mukri, G., B.D. Biradar and G.M. Sajjanar. 2010. Effect of temperature on seed setting behaviour in rabi Sorghum (Sorghum bicolor (L). Moench). Elect. J. Plant Breeding, 1(4): 776-782.
Nishihiro, J., I. Washitani, J.D. Thomson and B.A. Thomson. 2000. Patterns and consequences of stigma height variation in a natural population of a distylous plant, Primula sieboldii. Functional Ecology, 14: 502–512.
Rathcke, B and E.P. Lacey. 1985. Phenological patterns of terrestrial plants. Annual Review of Ecology and Systematics, 16: 179–214.
Rathcke, B. 1988a. Interactions for pollination among coflowering shrubs. Journal of Ecology, 69: 446–457.
Rathcke, B. 1988b. Flowering phenologies in a shrub community: competition and constraints. Journal of Ecology, 76: 975–994.
Sampath, S. 1964. Significance of hybrid sterility in rice. Rice genetics and cytogenetics. E. Pub. London.
Schemske, D.W and J. Agren. 1995. Deceit pollination and selection on female flower size in Begonia involucrata: an experimental approach. Evolution 49: 207–214.
Sharma, B.D and N.P. Balkrishna. 1993) Flora of India. Edited Botanical Survey of India, Calcutta. 2: 273
Sharma, L., A. Rana and S. Chauhan. 2011. Reproductive Biology of Aegle marmelos (L) Correa (Rutaceae). Int. J. Repro. Bio., 3(2): 151-154.
Sivasubramaniam, S., P. Narayanasamy and A. Sheik Dawood. 1972. Astudy of bariability in pollen and spikelet fertility in rice. Madras. Agric. J., 59 (11/12): 652-653.
Van Schaik, C.P., J.W. Terborgh, S.J. Wright. 1993. The phenology of tropical forests; Adaptive significance and consequences for primary consumers. Annu. Rev. Ecol. Syst., 24: 353-377.
Wang, Y.L., G.Z. Yong, C. Fa-Di, F. Wei-Min and T. Nian-Jun. 2012. Pollen Viability, Pistil Receptivity, and Embryo Development in Hybridization of Nelumbo nucifera Gaertn. The Scientific World Journal. 2012: 8.
Wang, Z.Y., Y.X. Ge, M, Scott and G. Spangenberg. 2004. Viability and longevity of pollen from transgenic and non-transgenic tall fescue (Festuca arudinacea) (Poaceae) plants. American Journal of Botany, 91: 523-530.
How to Cite
BALAGURU, B2., SOOSAIRAJ, S1*; KALA, A1; RAJA, P.1 AND. REPRODUCTIVE BIOLOGY OF THE TROPICAL VULNERABLE SHRUB CAPPARIS SHEVAROYENSIS SUND.-RAGH. (CAPPARACEAE). LIFE SCIENCES LEAFLETS, [S.l.], v. 52, may 2014. ISSN 0976-1098. Available at: <http://petsd.org/ojs/index.php/lifesciencesleaflets/article/view/107>. Date accessed: 29 june 2017.

Keywords

Reproductive biology, Tropical, Vulnerable, Shrub, Capparis shevaroyensis, Capparaceae.