Estimation of Genetic Variability and Divergence for Fruit Yield and Quality Traits in Cucumber (Cucumis Sativus L.) in North-Western Himalays

Kumar, Sandeep; Kumar, Dharminder; Kumar, Ramesh; Thakur, K.K.; Dogra, Balbir Singh

doi:10.13189/ujps.2013.010201

Cited by 21 publications

(11 citation statements)

References 9 publications

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“…Estimating heritability and genetic advancement would be useful additions to this parameter. These findings are in consistent with Kumar et al (2013) Heritability in broad sense varied from 35% to 100% for total number of male flowers. High value of heritability were observed in most of the traits, such as days to first female flower (81%), leaf area (99%), chlorophyll content (90%), total number of female flowers (92%), total number of fruits (85%), vine length (83%), days to first fruit harvest (97%), TSS (95%), fruit weight (96%), fruit diameter (97%), fruit yield per plant (93%) and phenol content (96%).…”

Section: Resultssupporting

confidence: 88%

Analysis of variance components for quantitative traits in muskmelon (Cucumis melo L.)

HARSH¹

2022

APSR

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An experiment with different contributing charactersof 26 genotypes of muskmelon (Cucumis meloL.) was performed in a randomized block design with three replications during the Zaid season (Feb-May) of 2019, at Banaras Hindu University, Varanasi in order to understand the genetics of yield formation characteristics with yield enhancement potentials. Analysis of varian cerevealed the presence of significant differences among all genotypes for almost all the characters indicating that there is a plenty of room to improve the population for these traits. The range of variation was documented widest for the characters viz.; fruit weight (179.7 to 777.1 g), yield of fruit per plant (360.3 to 3109.5 g), pulp weight (107.0 to 557.2 g), and seeds per fruit (183.6 to 477.3). Genotypic coefficients of variation values were lower than phenotypic coefficients of variation for all characters.The fruit yield per plant revealed the highest phenotypic and genotypic coefficients of variation values followed by titratable acidity, pulp weight, total number of female flowers and seed weight. Also, fruit yield per plant, total number of female flowers, node to first female flower, total number of fruits, fruit weight, and total soluble solids had high estimates of heritability and high genetic advance as per cent of mean, suggesting that selection for these traits might be effective.

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Section: Resultssupporting

confidence: 88%

Analysis of variance components for quantitative traits in muskmelon (Cucumis melo L.)

HARSH¹

2022

APSR

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“…In our study, the highest estimates (>20%) of the phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were observed for the internode distance, average fruit weight, number of fruits per plant, and yield per plant, indicating a wide range of variations ( Table 6 ). Similar results for high GCV were also reported for fruit weight, branches per plant, and 100-seed weight [ 38 ]; for fruit weight, fruit yield per plant, and the number of fruits plant −1 [ 57 ]; and for fruit weight and fruit length [ 37 ]. A trait with a GCV value close to that of the PCV indicates the least possibility of environmental influence.…”

Section: Discussionsupporting

confidence: 79%

“…Our results demonstrate that the studied landraces had light green (65.05%), green (14.56%), dark green (3.88%), yellowish green (12.62%), greenish yellow (1.94%), blackish green (0.97%), and whitish green (0.97%) fruit skin colour. Wide variations in fruit colour have also been reported in [ 37 , 38 ]. Phenotypic diversity was the highest for the colour of leaves, size of leaves, skin colour of fruits, and shape of fruits [ 38 ].…”

Section: Discussionmentioning

confidence: 74%

A Study on the Phenotypic Variation of 103 Cucumber (Cucumis sativus L.) Landraces for the Development of Desirable Cultivars Suitable for the Changing Climate

Ahmed

Rohman

Hossain

et al. 2022

Life

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The cucumber (Cucumis sativus L.) is one of the most important vegetables in Bangladesh as well as across the globe. However, many of the important cucumber landraces have disappeared in Bangladesh due to climate change, particularly erratic rainfall, extreme temperature, salinity, and drought. Therefore, to protect against the extinction of the cucumber landraces, we collected 103 landraces in different geographical regions of Bangladesh, including drought and saline-prone areas, and studied their divergence for the future breeding programme for the development of cultivars suitable for the climate-changing situations. Data on morphological features, yield, and its components, which include 17 qualitative and quantitative traits, were recorded during the observation. Among the cucumber landraces, the Shannon–Weaver diversity index analysis revealed the presence of genetic diversity in these landraces. The biggest diversity appeared in the fruit-related characteristics, i.e., stem end fruit shape, bottom end fruit shape, fruit shape, and fruit skin colour at the table and harvest maturity. The descriptive statistics and analysis of variance expressed a wide range of variability for quantitative traits. A broad phenotypic variation was also observed for traits such as yield plant−1 [CV (%) 31.88, ranges 0.96 to 3.11 kg] and fruits plant−1 (CV (%), 28.71, ranges, 2.58 to 9.75). High heritability (broad sense) coupled with a high genetic gain was observed for yield and yield-contributing characteristics, indicating that these characteristics are controlled by additive gene effects, and they are more reliable for effective selection. The phenotypic correlation studies showed that fruit yield plant−1 exhibited a positive and significant correlation with fruits plant−1, fruit length, fruit weight, fruit width, branches plant−1, and plant height. All landraces were grouped into six clusters, and the maximum number of landraces were accommodated in cluster VI (30), followed by cluster V (22), cluster III (22), cluster IV (14), cluster I (13), and cluster II (2). Comparing cluster means with studied traits revealed that cluster III with landraces AC-14, AC-97, AC-471, AC-451, and RAI-209 were more divergent for improving average fruit weight, fruit length, and fruit width. On the other hand, cluster IV with landraces AC-201, TT-161, RAI- 217, RAI-215, and TRMR-103 were more divergent for improving average vine length, internode length, and the number of primary branches plant−1, the number of fruits plant−1, and yield plant−1. According to the MGIDI index, AC-14 (G1), AC-201 (G7), AC-471 (G24), AC-97 (G30), RAI-215 (G68) and TT-161 (G 94) may be considered to be the best parents based on their qualitative and quantitative characteristics for the future breeding programme. Moreover, crossing between the landraces, which were collected from saline and drought areas, in clusters I, V, and VI with those in other clusters could produce suitable cucumber varieties for the climatic changing situation.

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“…The proportional contribution of lines, testers and their interactions revealed that contribution of lines for different traits ranged from 32.30 (fruit yield per ha) to 50.06 (Seed vigour index-II) per cent. The contribution of lines was found higher than the individual contribution of testers and lines × testers interactions for seed germination (43.51 %), seedling dry weight (46.50 %), seed vigour 2013b), seed vigour (Nerson 2007, Kumar et al 2013b) and fruit yield (Dogra and Kanwar 2011, Golabadi et al 2012, Kumar et al 2013b) traits had also been reported earlier in different varieties of cucumber. But, none of them had studied the variations for seed vigour traits using hybrid varieties of cucumber.…”

Section: Mean Performance and Correlation Studiessupporting

confidence: 75%

Heterotic potential, potence ratio, combining ability and genetic control of seed vigour traits for yield improvement in cucumber (Cucumis sativus)

Kumar¹,

Kumar²,

Dogra³

2018

Indian J Agri Sci

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The paucity of research on seed quality enhancement for yield improvement in cucumber (Cucumis sativus L.) motivated us to undertake this study. Therefore, present investigation was carried out to estimate the combining ability, gene action, heterosis and potence ratio for seed vigour and yield traits in 48 F1 crosses, developed by crossing 16 lines (8 gynoecious) and 3 testers during the year 2011. The seeds of all parents and their crosses, along with two standard checks (KH-1 and Pusa Sanyog), were assessed for different seed vigour (under laboratory conditions) and fruit yield (under open field conditions) traits during the year 2012. Experimental results revealed that parental lines LC-1-1, CGN-20953 and LC-3-3 were found superior on the basis of mean performance and general combining ability studies. Four cross combinations, viz., LC-1-1 × K-75, CGN-20953 × Poinsette, LC-3-3 × Poinsette and LC-3-3 × K-75 were found best on the basis of mean performance, specific combining ability and heterosis studies. Further, results of potence ratio reflected partial dominance for different seed vigour traits in all top five heterotic hybrids, while over dominance was exhibited by all the heterotic hybrids towards higher fruit yield per ha in cucumber. Gene action studies indicated the predominant role of non-additive gene action for the control of all the traits under study; hence heterosis breeding can be utilized for the genetic improvement of seed vigour and fruit yield traits in cucumber.

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Estimation of Genetic Variability and Divergence for Fruit Yield and Quality Traits in Cucumber (Cucumis Sativus L.) in North-Western Himalays

Cited by 21 publications

References 9 publications

Analysis of variance components for quantitative traits in muskmelon (Cucumis melo L.)

Analysis of variance components for quantitative traits in muskmelon (Cucumis melo L.)

A Study on the Phenotypic Variation of 103 Cucumber (Cucumis sativus L.) Landraces for the Development of Desirable Cultivars Suitable for the Changing Climate

Heterotic potential, potence ratio, combining ability and genetic control of seed vigour traits for yield improvement in cucumber (Cucumis sativus)

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