Genetic studies on variability, heritability, genetic advance and cluster analysis in pear (<i>Pyrus</i>spp.)

Bhat, Z. A.; Dhillon, W.S.

doi:10.5958/0974-0112.2015.00033.x

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, the highest estimates of broad sense heritability (more than 60 %) coupled with high genetic advance as % of mean (more than 20 %) indicate that most likely the broad sense heritability is due to additive gene effects and hence selection may be effective for the improvement of traits viz., plant height, number of primary and secondary branches, stem girth, number of leaves, leaf length, leaf width, leaf thickness, corolla tube length, bud girth and flower diameter (Table 5 and 6). This result is in accordance with the findings of black gram (14). Broad sense heritability and genetic advance are regarded as the fundamental metrics in quantifying the genetic variability of traits within a population and guiding breeding efforts to enhance desirable traits in crops.…”

Section: Ii) Broad Sense Heritability (%) and Genetic Advance As Perc...supporting

confidence: 88%

Phenotypic characterization and genetic variability, genetic diversity of elite mutants of Jasminum auriculatum Vahl and induction of homeotic mutants

Mirunalini,

Ganga,

Rajamani

et al. 2024

Plant Sci. Today

View full text Add to dashboard Cite

Jasmine is commonly propagated vegetatively, representing a poor genetic diversity base for effective selection to make further improvements in yield and quality. Hence, research conducted at TNAU during 2021-2023 aimed to induce genetic variation in J. auriculatum through the application of physical (gamma rays) and chemical (Ethyl Methane Sulphonate; EMS) mutagens. The M1V3 generation putative mutants of J. auriculatum cv. CO.1 was evaluated under field condition. It was observed that mutants derived from treatments 10 Gy gamma irradiation and 35 mM EMS exhibited maximum vegetative growth parameters, including plant height, stem girth, internodal length, number of leaves, leaf width and leaf thickness and flower quality parameters viz., flower bud length and corolla tube length. These values were surpassed those of parent CO.1. The phenotypic coefficient of variation (PCV) was prominent than genotypic coefficient of variation (GCV) for all the traits studied, indicating the appreciable influence is not only by the genetic factor but highly influenced by the environment. The higher magnitude of broad sense heritability coupled with high genetic advance as % of mean was observed for corolla tube length at 15 Gy, 35 mM and 40 mM, bud girth at 10 Gy and 35 mM, flower diameter at 35 mM. Homeotic mutants were identified and isolated from the mutated population. This study further explored the reliability of the observed traits for making simple selection for efficient improvement of jasmine.

show abstract

Section: Ii) Broad Sense Heritability (%) and Genetic Advance As Perc...supporting

confidence: 88%

Phenotypic characterization and genetic variability, genetic diversity of elite mutants of Jasminum auriculatum Vahl and induction of homeotic mutants

Mirunalini,

Ganga,

Rajamani

et al. 2024

Plant Sci. Today

View full text Add to dashboard Cite

show abstract

“…al., 2017;Lal et al, 2022(b); andKumari et al, 2017); in mango for sex ratio, fruit and peel weight, thickness of peel, stone weight, pulp to stone ratio, TSS, and titratable acidity(Das et al, 2021), in strawberry for fruit length, fruit yield and leaf area index(Mishra et al, 2015); in pear for fruit weight and yield(Bhat and Dhillon, 2015); in cashew for plant height, trunk girth, canopy diameter, owering duration, nuts per panicle, kernel weight, nut weight and nut yield(Chandrasekhar et al, 2018); in jackfruit for leaf blade width, core weight of fruit, seed weight, ake to seed ratio and yield per tree (Debnath and Deb, 2022); and in guava for fruit length to width ratio, seed weight, ascorbic acid, petiole length, and fruit weight(Singh et al, 2015 ) leaf length, diameter of ower bud and fruit yield(Patel et al, 2015). Unfortunately, the ascorbic acid trait was not similar to the ndings bySingh et al (2015).…”

mentioning

confidence: 99%

Genetic Variability Studies Based on Morphological and Physicochemical Characteristics Among Different Longan (Dimocarpus longan Lour.) Genotypes Under North Bihar Conditions

Kumar,

Gupta,

Kanth

et al. 2023

Preprint

View full text Add to dashboard Cite

The present experiment was carried out in a randomized complete block design (RCBD) with three replications to study morphological variability, genetic variability, heritability, and genetic advance for different traits of twenty genotypes. The results indicated that the genotypes were diversified for all the quantitative and qualitative traits except a few qualitative traits. The phenotypic coefficient of variation (PCV) showed higher than the genotypic coefficient of variation (GCV) which indicates the meager effect of environment on the phenotypic expression of traits. The high heritability coupled with high genetic advance as percent of mean were recorded for the traits viz., plant height, trunk girth, crown diameter, tree volume, rachis and petiole length, duration of panicle imitation, number of days from panicle initiation to flowering, length and width of inflorescence, number of fruits per bunch, fruit, aril and seed weight, aril thickness, titratable acidity and TSS acid ratio. Therefore, these traits can be used as selection indices for indirect selection for the crop improvement programmes. On the basis of mean performance found best performing genotypes LGC-6 for yield attributing and fruit quality traits.

show abstract

Genetic divergence studies among sand pear (Pyrus pyrifolia (Burm) Nakai.) genotypes for yield and yield contributing traits in North-Western Himalayas

Chauhan

Thakur

Dogra

et al. 2023

Preprint

View full text Add to dashboard Cite

Germplasm assets are critical for hereditary breeding, investigation of complex traits and are conducive to the investigation and creation of unused germplasm. In order to effectively measure genetic divergence and character association for sand pear genetic improvement, yield and yield contributing variables were assessed for 125 genotypes during 2018–2021 in three districts of Himachal Pradesh, India (N-W Himalayas). The results indicated that estimates for eye basin, depth stalk cavity depth, fruit stalk length, non reducing sugars and leaf area high had high PCV and GCV values. High heritability and genetic gain both suggests the existence of additive gene action. The fruit's weight, sugar-to-acid ratio, and titratable acidity were reported, these qualities can be enhanced via direct selection. Fruit weight, total sugars, trunk diameter, total soluble solids (TSS), fruit length, fruit breadth, petiole length, and leaf area all have a high direct effect on plant yield, according to studies of association. Therefore, the overall result suggests that there is substantial diversity in the assessed attributes for them to serve as selection indices for genetic improvement of sand pear.

show abstract

Genetic studies on variability, heritability, genetic advance and cluster analysis in pear (Pyrusspp.)

Cited by 4 publications

References 0 publications

Phenotypic characterization and genetic variability, genetic diversity of elite mutants of Jasminum auriculatum Vahl and induction of homeotic mutants

Phenotypic characterization and genetic variability, genetic diversity of elite mutants of Jasminum auriculatum Vahl and induction of homeotic mutants

Genetic Variability Studies Based on Morphological and Physicochemical Characteristics Among Different Longan (Dimocarpus longan Lour.) Genotypes Under North Bihar Conditions

Genetic divergence studies among sand pear (Pyrus pyrifolia (Burm) Nakai.) genotypes for yield and yield contributing traits in North-Western Himalayas

Contact Info

Product

Resources

About