Cluster analyses for various Agro-morphological traits in Fieldpea (Pisum sativum L.) Genotypes

Author: Amit, Rajesh Yadav, Ravika, Deepak Kaushik and Navreet Kaur Rai

Download PDF

Abstract

Fieldpea (Pisum sativum L.), a multi-functional, highly nutritious winter-season pulse crop. It has tremendous potential to offer health benefits, especially with the heightened emphasis on nutrition. In any breeding programme, choosing parental genotypes that might produce better heterotic combinations requires an understanding of the genetic variety present among genotypes of crop. So, with this objective present investigation were carried out among thirty nine fieldpea genotypes. Experiment consisting of 39 genotypes (12 parents and their 27 crosses) were held in randomized block design with three replication at Pulses Research Area, Department of Genetics and Plant Breeding, CCS, Haryana Agricultural University, Hisar during rabi 2020-21. As due to continuous selection pressure for specific traits like yield, the varieties have become more vulnerable to biotic and abiotic stresses, which has jeopardized their potential for long-term sustained genetic improvement. So, there is need to isolate the superior inbreds and hybrids that can be used as a further breeding programme. Results revealed that thirteen agro-morphological traits delineated 39 genotypes into four major clusters. Furthermore, higher inter-cluster distance was observed than intra-cluster distance. The maximum intra-cluster distance was observed in cluster I (75.60) and the maximum inter cluster distance was observed between cluster Ⅰ and cluster IV (94.97). Cluster II and cluster I has high mean value for most of the traits. So, In order to create superior hybrids, the genotypes in cluster II can be crossed with genotypes of cluster I.

Keywords

Agro-morphological traits, Pisum sativum L., superior inbreds, genotypes

Conclusion

In the current study, 39 genotypes were investigated for diversity in order to find compatible and distinctive genotypes for pearl millet breeding programmes. There was substantial genetic variation among the genotypes for most traits, connoting the urgency of exploiting a high degree of genetic variation through selection. Different genotypes of cluster II would be crossed with genotypes of cluster I in order to improve seed yield. These genotypes would also be used as inbred lines for future hybrid development programmes. The results of the present study would help to identify heterotic clusters and superior parents for structuring breeding strategies to develop improved field pea cultivars. Cluster analysis in field pea crops provides a valuable tool for understanding the genetic diversity and structure within populations, aiding in the development of improved cultivars with desirable traits. It enables breeders to make informed decisions by identifying germplasm groups and selecting suitable parents for crossing, ultimately contributing to the enhancement of field pea varieties.

References

-

How to cite this article

Amit, Rajesh Yadav, Ravika, Deepak Kaushik and Navreet Kaur Rai (2023). Cluster analyses for various Agro-morphological traits in Fieldpea (Pisum sativum L.) Genotypes. Biological Forum – An International Journal, 15(5): 351-355.