GENETIC ARCHITECTURE OF GREEN FRUIT YIELD AND QUALITY CHARACTERS IN RELATION TO GMS BASED HYBRIDS IN CHILLI (Capsicum annuum var. longum (D.C.)Sendt.)
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Date
2004
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AAU, Anand
Abstract
The present investigation comprised of 40 F1S developed from four Gms lines and ten male parents through Line x Tester mating design in chilli (Capsicum annuum var. longum (D.C.) Sendt.) was undertaken at Main Vegetable Research Station, Gujarat Agricultural University Anand during kharif planting crop season of the year 2002-03. The experimental material (40 F1S, 4 Gms lines, 10 pollen parents and one check variety) was evaluated in complete randomized block design with three replications. The main objective of the experiment was to study heterosis, gene effects and combining ability effects for green fruit yield and various yield as well as quality characters. Analysis of variance indicated presence of considerable amount of variability among genotypes for all the fourteen characters studied. Mean squares due to parents and hybrids were significant for all the characters. Whereas, parents was. hybrids contrast comparison was significant for all the attributes except average fruit weight, suggesting the existence of differences between parents and hybrids leading to evidence for presence of heterosis for all those characters. In respect to per se performance of parents, among the Gms lines ACMS-3 and ACMS-4 and among the male inbreds ACS 97-2, ACS 2000-01. ACS 2000-02, ACS 2000-03, Punjab Gucchedar and RHRC Pendent were found to be superior for green fruit yield and most of the yield as well as quality characters. Among the hybrids. ACMS-2 x Pb. Gucchedar. ACMS-3 x Pb. Gucchedar. ACMS-3 x ACS 97-2, ACMS-4 x Arka lohit and ACMS-2 x ACS 2000-02 had high per se mean for green fruit yield. These hybrids also possessed high mean values for other important characters in respect to yield and quality. In the present investigation, significant and higher estimates of relative heterosis, hetcrobeltiosis and standard heterosis were observed for green fruit yield. The hybrids ACMS-2 x Pb. Gucchedar. ACMS-4 x ACS 2000-03, ACMS-4 x ACS 2000-01 and ACMS-3 x Pb. Gucchedar exerted greater amount of heterobelliosis and standard heterosis for yield, these hybrids also depicted larger estimates of heterosis for number of fruits per plain. These lop ranking hybrids also registered significant desirable heterosis for most of the growth and quality characters in addition to important yield contributing component characters. For number of fruits per plant, hybrid ACMS-3 x Pb. Gucchedar borne the highest fruits followed by ACMS-4 x Arka lohit and ACMS-2 X Pb. Gucchedar. likewise these hybrids also depicted the maximum values of standard heterosis and larger estimates of heterobeltiosis for the said trait. These hybrids also registered higher estimates of various heterotic effects for one or more than one yield contributing component characters. In respect to earliness, hybrids ACMS-: X ACS 2000-03. ACMS-4 x ACS 2000-03 and ACMS-1 x ACS 96-33 look the minimum days for flowering. hence these hybrid had the least estimates of standard heterosis. The estimates of components of genetic variance revealed the importance of non additive gene effect for genetic control of green fruit yield and its important component character number of fruits per plant, for all the growth attributes except plant height and for all the quality parameters. Additive gene effect was importance for fruit length and fruit diameter. Whereas, both the components of genetic variance were significant for average fruit weight. For plant height and fruit shape index none of the gene effects had significant estimates.
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PLANT BREEDING AND GENETICS, AGRICULTURE, A STUDY