28May 2017

GENETIC VARIABILITY CHARACTERIZATION OF SOME EX SITU CONSERVED FINGER MILLET (ELEUSINE CORACANA (L.) GAERTN. SUBSP. CORACANA) GERMPLASM ACCESSIONS IN SRI LANKAUSING QUALITATIVE MORPHOLOGICAL MARKERS.

  • Department of Botany, Faculty of Applied sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
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Finger millet (Eleusinecoracana) [order Poales, family Poaceae, sub family Chloridoideae] ranks fourth in importance among milletsin the world. This crop is grown in the arid and semiarid regions of the world. E. coracanahas a greater nutritional value. This study was performed on 42 germplasm accessions of finger millet conserved at the Plant Genetic Resource Center (PGRC), Gannoruwa, Sri Lanka. These germplasm accessions comprised of 27 Sri Lankan accessions, 11 Indian accessions, 2 Zimbabian accessions and 2 recommended varieties of Sri Lanka. Qualitative traits taken into consideration were Pigmentation, Growth habit, Ear shape, Ear size, Finger branching, Discontinuity of spikelet, Lodging susceptibility, Spikelet shattering, Grains covering by glumes, Grain colour, Grain shape and Grain surface. Out of them, Pigmentation and Finger branching were monomorphic for the studied accessions while rest of ten traits were polymorphic. Characters were scored following International Plant Genetic Resource Institute (IPGRI) descriptors developed for finger millet. The majority of individual plants was found to possess erect stem (71.4%), semi-compact shaped ears (68.1%), small size ears (41.5%), no discontinuity of spikelet on finger (92.0%), no lodging susceptibility at maturity (61.8%), no spikelet shattering at maturity (95.1%), enclosed grains covering by glumes (71.5%), light brown colour grains (34.9%), round shaped grains (96.9%) and smooth grain surface (95.0%). Important objective of any plant scientist is to identify an optimum number of plant traits which are sufficient to explain the maximum variability in the crop growth from sowing to harvest. Results of the study suggest a considerable morphological variability, which could exist among the studied accessions. This finding justifies the importance of germplasm characterization.

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[P. N. Dasanayaka and D. V. S. Kaluthanthri. (2017); GENETIC VARIABILITY CHARACTERIZATION OF SOME EX SITU CONSERVED FINGER MILLET (ELEUSINE CORACANA (L.) GAERTN. SUBSP. CORACANA) GERMPLASM ACCESSIONS IN SRI LANKAUSING QUALITATIVE MORPHOLOGICAL MARKERS. Int. J. of Adv. Res. 5 (May). 1381-1389] (ISSN 2320-5407). www.journalijar.com

P.N Dasanayaka
Department of Botany, Faculty of Applied sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka

DOI:

Article DOI: 10.21474/IJAR01/4259      
DOI URL: https://dx.doi.org/10.21474/IJAR01/4259

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