Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

Abstract

Current study was undertaken to elucidate the inheritance qualitative traits namely, flower colour and leaf hairiness in two F2 populations comprising of 194 and 99 individuals with reference to yield and agronomic traits along with genetic parameters. The violet colour of flowers and leaf hairiness were dominant over white flower and smooth leaves, respectively. The 2-test revealed independent single gene inheritance for both the traits with joint segregation ratio of 9:3:3:1 in F2. Except for no. of pods per cluster and pods per plant, both parents (Smooth 25 and HG2-20) exhibited significant (p less then 0.05) differences for traits under investigation. A higher estimate of phenotypic coefficient of variance (PCV) than genonotypic coefficient of variance (GCV) was recorded for all the characters except test weight and clusters on branches. The heritability ranged from 24.36% (seeds per pod) to 92.32% (clusters on branches). Gene action as per skewness indicated that both duplicate and complementary interactions were playing role in the development of various traits, whereas, inheritance analysis as per kurtosis suggested that traits were oligogenic. Eventually, it can be concluded that high GCV, appearance of transgressive segregants and involvement of fewer major genes in defining the quantitative traits including yield, provided an opportunity for their genetic improvement.

An easy method of artificial hybridization in two arid legumes, guar (Cyamopsis tetragonoloba Taub.) and moth bean [Vigna aconitifolia (Jack.) Marechal]

“…However, mutation breeding was followed in moth bean germplasm selections without any systematic hybridization program for genetic improvement. Only limited inheritance studies are available in guar (Mahla et al 2020;Sharma 2 et al 2021a;Chaudhary and Lodhi 1981;Ray and Stafford 1985), while such studies are absolutely lacking in moth bean.…”

The Effect of Planting Arrangement, Phosphorus and Nitrogen on Physiological Traits and Guar Yield (Cyamopsis tetragonoloba L.)

“…This plant has a high drought tolerance and is a good crop for semi-arid regions (Grover et al, 2016) and it is called Cluster bean because the pods and flowers appear at the leaf-stem junction (Abidi et al, 2015). Mahla et al (2020) reported due to the high industrial value and the sharp jump in demand, the cultivation of guar has also attracted the attention of farmers in the countries of Australia, Bangladesh, Myanmar, the United States of America, South Africa, Brazil, Congo and Sri Lanka. This plant grows in sandy loam soils with good drainage as well as in saline and relatively alkaline soils with a pH of 7.5 to 8.0 (Ghulam Nabi, 2013).…”

Green synthesis of copper nanoparticles extracted from guar seedling under Cu heavy-metal stress by Trichoderma harzianum and their bio-efficacy evaluation against Staphylococcus aureus and Escherichia coli

“…Hence, in this study, guar is used as a legume for phytoremediation (Amin et al, 2018). Guar or cluster bean (Cyamopsis tetragonoloba L.) is a drought-resistant annual leguminous crop that is predominantly grown in India and Pakistan (Mahla et al, 2020). Guar is one of the unique beans with a large spherical endosperm that contains a signi cant amount of galactomannans, which are used in a variety of food and industrial uses.…”