“Matromorph induction and heterosis studies in peas (Pisum sativum L.)''
Loading...
Date
2021-04
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation entitled, “Matromorph induction and heterosis studies in peas (Pisum sativum L.)” was carried out to obtain information on potential parent (s) for matromorph induction; and heterosis and combining ability studies through line x tester analysis at the Vegetable Experimental Farm-1 of SKUAST-Jammu. The experimental material consisted of 15 genotypes of pea (12 lines + 3 testers) for Line x tester analysis and Vicia faba and Lathyrus odoratus (inducers) for matromorph induction. All 36 crosses (F1s) along with parents were grown in a Randomized Block Design with three replications in 2017-18. Significant mean squares for lines, testers, crosses, line x tester and parents vs. crosses were observed for most of the traits. Among 15 homozygous female parents tested for matromorph induction three namely Palam Triloki, Mithi Phali and Vivek Matar-10 proved best using V. faba as male (inducer). Among 36 heterozygous female parents tested for matromorphs, 8 F1s namely ‘Palam Triloki x Azad Pea-1’ ‘Arka Apoorva x P-89’, ‘Arka Ajit x P-89’, ‘Arka Apoorva x Azad Pea-1’, ‘Arka Ajit x Azad Pea-1’, ‘Palam Priya x Azad Pea-1’, ‘Palam Triloki x P-89’ and ‘Arka Priya x Azad Pea-1’ produced matromorphs and variants using V. faba as male (inducer). Of two pollen parents tested for matromorph induction V. faba proved better. Line x tester analysis carried out to determine parents showing GCA and crosses showing SCA revealed that two females (Arka Karthik and Arka Apoorva) were found to be the good general combiners for most of the traits (days to 50% flowering, days to first picking, plant height, node at which first flower appears, number of pods per node, pod length, number of pods per plant, number of seeds per pod, number of primary branches per plant, shelling percentage, ascorbic acid content total sugar content and crude protein). Among the males, P-89 and VL-Ageti Matar-7 were found to be the best general combiner for most of the traits viz., pod yield per heacter, pod yield per plant, crude protein, total sugar content total soluble solids, plant height, days to 50% flowering, inter nodal distance, days to first picking, pod length, pod width, number of pods per node, number of seeds per pod and shelling per centage). The crosses showing SCA revealed that cross combinations ‘Azad Pea-3 x P-89’, ‘Palam Triloki x P-89’ and ‘Palam Triloki x Azad Pea-1’ were found to be good specific combiner for most of the traits viz., plant height, days to 50% flowering, days to first picking, ascorbic acid content, crude protein, pod yield per plant and pod yield per hectare. The best heterotic combination for days taken to 50% flowering and days to first picking was ‘Palam Triloki x Azad Pea-1’, for crude protein, pod yield per plant and pod yield per heacter, ‘Palam Priya x Azad Pea-1’ and for number of pods per node ‘Vivek Matar-11 x VL-Ageti Matar-7’. The ratio of 2 SCA/2 GCA (average) was more than unity in plant height, days to 50% flowering, node at which first flower appears, inter nodal distance, days to first picking, pod length, pod width, number of pods per plant, number of seed per pod, number of primary branches per plant, shelling percentage, ascorbic acid content and total soluble solids indicating non-additive gene action. The screening of parental lines, F1 hybrids and Mat1 progenies under protected conditions against powdery mildew revealed that, Arka Karthik, Arka Priya, Arka Apoorva and Arka Ajit proved to be resistant against powdery mildew. However, F1’s carrying powdery mildew gene in hemizygous condition were susceptible to powdery mildew, genotypic response were observed for matromorph induction with V. faba among homozygous maternal genotypes Palam Triloki, Vivek Matar-10 and Mithi Phali responded to matromorphy. Heterozygous maternals (F1’s) viz., Arka Apoorva x P-89 and Palam Triloki x Azad Pea-1 responded relatively better to matromorphy. With practically no segregation in Mat1 and Mat2 for powdery mildew resistance/ tolerance and node to first flower initiation. A limited level of variation was also observed in Mat1 and Mat2 plants.
Description
Keywords
Citation
Preferred for your work_Kumar, M. 2021. Matromorph induction and heterosis studies in peas (Pisum sativum L.) Ph. D thesis Sher-e-kashmir University of Agricultural Sciences & Technology of Jammu, India