Analysis of generation means and components of variance for parthenocarpy in cucumber (<i>Cucumis sativus L.</i>)

Sun, Zhaohui; Lower, R. L.; Staub, Jack E.

doi:10.1111/j.1439-0523.2006.01224.x

Cited by 26 publications

(16 citation statements)

References 18 publications

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“…However, the F 1 progeny mean in G-block was lower than the mid-parent value (Table 3). Although openfield experiments were conducted for only one year, results confirmed an earlier finding from a generation means analysis of cross progeny derived from P 1 and P 2 (Sun et al 2006a) that demonstrated that genotype performances vary across growing environments. Under dissimilar experimental conditions differences in magnitude (not in rank) between treatments would be expected given the environmental influence on parthenocarpic fruit development.…”

Section: Generation Meanssupporting

confidence: 87%

Variance component analysis of parthenocarpy in elite U.S. processing type cucumber (Cucumis sativus L.) lines

Sun¹,

Lower²,

Staub

2006

Euphytica

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Parthenocarpic (seedless) U.S. processing type cucumber (Cucumis sativus L.) germplasm can bear more high quality fruit when compared to their seeded counterparts. Knowledge of genetic components of variation for parthenocarpy would assist cucumber breeders to incorporate this economically important trait into commercial varieties. The inheritance of parthenocarpy in elite U.S. processing type cucumber was, therefore, investigated by examining the single-harvest yield of F 3 progeny derived from a mating between line 2A (P 1 , parthenocarpic) and line Gy8 (P 2 , non-parthenocarpic) grown in two fields (E-block and G-block at Hancock, Wisc.) in the summer of 2000. Environmental variance accounted for about 90% of total phenotypic variance in both locations. The degree of dominance genetic variance was 0.3 and 2.2 at G-block and E-block, respectively, and the minimum number of effective factors controlling parthenocarpy was estimated as 5 (G-block) to 13 (E-block). Estimates of heritability were significantly lower when based on individual plants within an F 3 family than on F 3 family mean performances. While narrow-sense and broad-sense heritability of individual plants within F 3 family was always < 0.1, narrow-sense heritability for F 3 family mean performance ranged between 0.33 (E-block) and 0.62 (G-block), and broad-sense heritability ranged between 0.53 (E-block) and 0.67 (G-block). Thus, in this population, advanced generation selection for parthenocarpy based on F 3 family mean performance will be more effective than selection of individual plants within F 3 family.

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Section: Generation Meanssupporting

confidence: 87%

Variance component analysis of parthenocarpy in elite U.S. processing type cucumber (Cucumis sativus L.) lines

Sun¹,

Lower²,

Staub

2006

Euphytica

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“…No research of this type has been previously performed in L. acuteangula. Inheritance of fruit shape, fruit size, and color in C. sativa has been reported (Sun et al, 2006). Ahmed et al (2003) reported the importance of nonadditive gene action for vegetative characters and the importance of additive and nonadditive gene action for total fruit number and precocious production of summer squash (C. pepo L.).…”

Section: Resultsmentioning

confidence: 96%

Combining Ability for Yield and Fruit Quality inLuffa

Tyagi

Sharma

Siddiqui

et al. 2010

International Journal of Vegetable Science

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The mating design (Line and Tester) has been extensively used to estimate general combining ability (GCA) and specific combining ability (SCA) variance and their effects. This design is also used to understand the nature of gene action involved in expression of economically important traits. Diallel analysis and combining ability in Luffa acutangula (L.) Roxb have not been extensively reported. Combining ability of 13 traits was examined in 45 Luffa hybrids derived from a 10 × 10 diallel mating design (excluding reciprocals) at two sowing dates and two locations. Additive and nonadditive genes were important for traits. The interaction of SCA × Location was not significant for traits except for days to opening of first female flower. Additive gene effects were more important for vine length, days to opening of the first male flower, number of male and female flowers/plant, number of nodes, number of fruit/plant, fruit length, fruit diameter, and number of seed/fruit. 'Slumber Long' was the best combiner, among 10 parental lines, for fruit yield/plant and fruit size. Crosses involving diverse parents and showing high SCA effects for fruit yield/plant have the potential to be utilized in Luffa improvement through simple recurrent selection.

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“…Inheritance of fruit quality traits has been reported in previous study (Umaharan et al, 1997;Lavi et al, 1998;Zalapa et al, 2006;Sun et al, 2006), but these efforts do not contain the maternal plant effect. The nutrition for fruit composed of carpodermis, pulp and seed was supported by maternal plant.…”

Section: Discussionmentioning

confidence: 99%

Genetic analysis of fruit shape traits at different maturation stages in sponge gourd

Zhang

et al. 2007

J. Zhejiang Univ. - Sci. B

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Abstract:The fruit shape is important quantitative trait closely related to the fruit quality. However, the genetic model of fruit shapes has not been proposed. Therefore, in the present study, analysis of genetic effects for fruit shape traits (fruit length and fruit perimeter) in sponge gourd was conducted by employing a developmental genetic model including fruit direct effects and maternal effects. Analysis approaches of unconditional and conditional variances were applied to evaluate the genetic behavior of fruit shape traits at economical and physiological maturation times. The results of variance analysis indicated that fruit length and fruit perimeter were simultaneously affected by fruit direct genetic effects and maternal effects. Fruit direct genetic effects were relatively more important for fruit shape traits at whole developmental period. The gene expression was most active at the economical maturation stage (1~12 d after flowering) for two shape traits, and the activation of gene was mostly due to direct dominance effects at physiological maturation stage (13~60 d after flowering). The coefficients due to different genetic effects, as well as the phenotypic correlation coefficients, varied significantly between fruit shape traits themselves at various maturation stages. The results showed that it was relatively easy to improve fruit shape traits for industrial purpose by carefully selecting the parents at economical maturation stage instead of that at physiological maturation stage.

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Analysis of generation means and components of variance for parthenocarpy in cucumber (Cucumis sativus L.)

Cited by 26 publications

References 18 publications

Variance component analysis of parthenocarpy in elite U.S. processing type cucumber (Cucumis sativus L.) lines

Variance component analysis of parthenocarpy in elite U.S. processing type cucumber (Cucumis sativus L.) lines

Combining Ability for Yield and Fruit Quality inLuffa

Genetic analysis of fruit shape traits at different maturation stages in sponge gourd

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