Newly isolated intervarietal garden pea (Pisum sativum L.) progenies (F₇) under north western Himalayan conditions of India

Abstract

Low genetic diversity acts as a major bottleneck in garden pea breeding, and diverse parents are required to generate new genetic material. The diversity of parents utilized in hybridization programme was ascertained following simple sequence repeats (SSR) markers. Thirty-six homozygous F7 progenies were isolated from three intervarietal crosses through shuttle breeding programme over a period of 6 years (2009–2014). Two experiments were conducted for two consecutive years 2014/15 and 2015/16, for evaluating the agronomic performance of progenies along with four commercial control cultivars. Analysis of variance (ANOVA) revealed that genotype, growing year and their interaction had significant effects on most of the traits. Line ‘DPP-SP-6’ recorded significantly higher pod yield/plant in comparison to all other genotypes in 2014/15, 2015/16 and for pooled over years. In addition, ‘DPP-SP-22’, ‘DPP-SP-7’ and ‘DPP-SP-17’ also performed statistically at par with best-performing check ‘Pb-89’ during both the years. These superior lines, in general, showed better pod filling, green pod colour, high shelling, sweetness and resistance to powdery mildew disease. These superior progenies could act as an alternative to the popular check varieties after their exhaustive evaluation over environments.

Genetics of Quality Attributes and Powdery Mildew Severity in Garden Pea (Pisum sativum Var. Hortense L.) under Sub Temperate Conditions of North-Western Himalayas

“…It is native of Mediterranean region with Near East and Ethiopia as secondary centres. It is a rich source of protein ranging from 23-33% (Sharma et al, 2019), slowly digestive starch, sugars and amino acids. Besides, it supplies an extraordinarily diverse health building nutrients such as vitamins, minerals and also lysine, a limiting essential amino acid in cereals (Sharma et al, 2019).…”

“…It is a rich source of protein ranging from 23-33% (Sharma et al, 2019), slowly digestive starch, sugars and amino acids. Besides, it supplies an extraordinarily diverse health building nutrients such as vitamins, minerals and also lysine, a limiting essential amino acid in cereals (Sharma et al, 2019). It is eaten as fresh vegetable, pulse and processed as pickle, canned, frozen or dehydrated to consume during lean period (Sharma et al, 2019).…”

“…Besides, it supplies an extraordinarily diverse health building nutrients such as vitamins, minerals and also lysine, a limiting essential amino acid in cereals (Sharma et al, 2019). It is eaten as fresh vegetable, pulse and processed as pickle, canned, frozen or dehydrated to consume during lean period (Sharma et al, 2019). It helps to reduce the cost of production by fixing atmospheric nitrogen (Anjum et al, 2015) and provide the advantage of low input and sustainable farming.…”

Genetic Variability for Pod Yield and Component Traits in Sugar Snaps (Pisum sativum var. saccharatum)

“…High yield is the basic objective of all crop breeding programmes, and it is essential to develop genotypes with potential to surpass commercially adopted/adapted cultivar(s) otherwise the genotype will be of no significance even if it has excellent performance for other traits (Sharma et al 2020). In increasing the production of any crop, the initial and cheapest input is the continuous availability of high yielding and well adapted varieties through a strong breeding programme.…”

“…Yield and Component Traits in Sugar Snaps (Pisum sativum var. saccharatum) applications such as genetic variability in cultivars (Mohammadi and Prasanna 2003), identification of diverse parental combinations to generate segregating progenies with diverse back ground (Barrett and Kidwell 1998) and introgression of desirable genes from variable germplasm into the existing genetic base (Thompson and Nelson 1998), indicating thereby that the success in crop improvement through selection ultimately depend upon the genetic variability (Sharma et al 2020). The response of selection depends upon the relative proportion of the heritable component in the continuous variation with the help of genetic parameters namely, coefficient of variation, heritability and genetic advance.…”