scholarly journals General combining ability analysis of sex expression, fruit and seed characteristics in melon (Cucumis melo L.)

2017 ◽  
Author(s):  
Zdenka Girek ◽  
Slaven Prodanović ◽  
Suzana Pavlović ◽  
Slađan Adžić ◽  
Mladen Đorđević ◽  
...  
Keyword(s):  
Combining Ability ◽  
Cucumis Melo ◽  
Sex Expression ◽  
General Combining Ability ◽  
Combining Ability Analysis ◽  
Cucumis Melo L ◽  
Seed Characteristics

scholarly journals Potential of parents and hybrids experimental of the yellow melon

2020 ◽  
Vol 50 (2) ◽  
Author(s):  
José Galdino Cavalcante Neto ◽  
Karmita Thainá Correia Ferreira ◽  
Fernando Antonio Souza de Aragão ◽  
Rafaela Priscila Antônio ◽  
Glauber Henrique de Sousa Nunes
Keyword(s):  
Combining Ability ◽  
Cucumis Melo ◽  
Diallel Analysis ◽  
Fruit Weight ◽  
General Combining Ability ◽  
Economic Importance ◽  
Additive Effects ◽  
Agronomic Potential ◽  
Cucumis Melo L ◽  
Partial Diallel

ABSTRACT: Melon or muskmelon (Cucumis melo L.) is of considerable economic importance in Brazil. Nearly all the cultivars currently grown are hybrids. Heterosis has been used to advantage in the melon plant, and the use of uniform hybrids is one of the reasons for successful cultivation. The aim of the present study was to evaluate the agronomic potential of yellow melon lines and hybrids. An experiment was conducted in randomized blocks with three replications to evaluate 24 hybrids generated by crosses among three elite lines used as female parents (AF-01, AF-02, and AF-03) and eight lines used as male parents (LAM-01, LAM-02, LAM-03, LAM-04, LAM-05, LAM-06, LAM-07, and LAM-08). Yield and fruit quality traits were evaluated. Partial diallel analysis was carried out to estimate general combining ability and specific combining ability. Additive and non-additive effects were observed for the yield, mean fruit weight, and pulp thickness traits. The lines AF-02, LAM-02, and LAM-03 are the most promising as parents as they more frequently have favorable alleles. The most prominent hybrids in diallel analysis were AF-02 x LAM-02, AF-02 x LAM-03, AF-02 x LAM-04, and AF-03 x LAM-06.

scholarly journals The effect of growth regulators on sex expression in melon (Cucumis melo L.)

2013 ◽  
Vol 13 (3) ◽  
pp. 165-171 ◽  
Author(s):  
Zdenka Girek ◽  
Slaven Prodanovic ◽  
Jasmina Zdravkovic ◽  
Tomislav Zivanovic ◽  
Milan Ugrinovic ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Growth Regulators ◽  
Cucumis Melo ◽  
Staminate Flower ◽  
Sex Expression ◽  
Male Flowers ◽  
Cucumis Melo L ◽  
Perfect Flower

Seven traits related to flowering and sex expression in melon were studied and their reaction to application of two growth regulators (ethrel and gibberellic acid) was observed. Four monoecious genotypes (Sesame, ED-3, ED-4, Pobeditel) and four andromonoecious genotypes (Chinese muskmelon, Anannas, Fiata, A2-3lb) had been used for experiments. According to the results, ethrel had higher effects on the investigated traits than gibberellic acid. Ethrel increased the number of perfect flowers per plant for 7.18 (31.42%), reduced the number of male flowers per plant for 21.47 (17.98%), affected earlier appearance of the first pistillate/perfect flower for 3.68 days, and delayed the appearance of the first staminate flower for 16.07 days. Changes in the last two traits caused an extension of the period from the emergence of the first pistillate/perfect to the first staminate flower from 0.1 to 21.57 days, which represents the strongest effect of ethrel. Gibberellic acid had generally opposite effects on the studied traits.

scholarly journals Combining Ability Analysis of Yield and Its Components in Cacao

1990 ◽  
Vol 115 (3) ◽  
pp. 509-512 ◽  
Author(s):  
Geok Yong Tan
Keyword(s):  
Genetic Variability ◽  
Combining Ability ◽  
Theobroma Cacao ◽  
Female Parent ◽  
General Combining Ability ◽  
High Yield ◽  
Combining Ability Analysis ◽  
The Mean ◽  
Female Male Female ◽  
Bean Weight

Six Trinitario females of cacao (Theobroma cacao L.) were crossed with nine Amazonian males in a factorial crossing design. The 54 hybrid progenies were used to estimate genetic variability due to general combining ability (GCA) and specific combining ability (SCA) for yield, pod production, pod weight, husk content, number of beans per pod, average bean weight, and pod value. The results demonstrated that GCA differed significantly for all characteristics from all three sources (Le., female + male, female, and male). SCA (female × male) was also significantly different for all characteristics. The ratio of GCA to SCA ranged from 7.1 for number of beans per pod to 25.7 for pod weight. This result suggested that a major portion of the genetic variability was additive in nature for these characteristics. Among the six Trinitarios, KA2-106 was the best female parent; it contributed high yield and all the desirable pod and bean characteristics into the hybrid progenies. Trinitario KA2-101 combined high pod production and yield, but tended to transmit below-average pod and bean characteristics to its progenies. Amazonians KEE6 and KEE12 were the two highest-yielding male parents, but had below-average bean number per pod and average bean weight. KEE42 and KEE43 combined high yield and transmitted good pod and bean characteristics to their progenies. Based on the GCA effects and the mean performance of the hybrid progenies, a multi-line cultivar consisting of 20 high-yielding crosses with good pod and bean characteristics is being produced in seed gardens for commercial planting.

COMBINING ABILITY ANALYSIS IN THE CULTIVATED STRAWBERRY

1971 ◽  
Vol 51 (5) ◽  
pp. 377-383 ◽  
Author(s):  
L. P. S. SPANGELO ◽  
R. WATKINS ◽  
C. S. HSU ◽  
S. O. FEJER
Keyword(s):  
Combining Ability ◽  
Plant Density ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Flower Stalk ◽  
Combining Abilities ◽  
Combining Ability Analysis ◽  
Strawberry Cultivars

General and specific combining abilities were analyzed for total, marketable, early, and late yield, and for flower stalk number in a diallel cross of eight strawberry cultivars. Data were recorded from individual seedlings restricted to two runner plants, thereby eliminating variability resulting from differences in plant density. General and specific combining abilities for the five characters were highly significant. Estimates of general combining ability effects taken alone were, in general, of little value in predicting the order of desirability of individual crosses.

GENOTYPE × ENVIRONMENT INTERACTIONS IN SMOOTH BROMEGRASS. I. YIELD

1979 ◽  
Vol 21 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Wai-Koon Tan ◽  
Geok-Yong Tan ◽  
P. D. Walton
Keyword(s):  
Genetic Variation ◽  
Analysis Of Variance ◽  
Combining Ability ◽  
Significant Variation ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Bromus Inermis ◽  
Smooth Bromegrass ◽  
Combining Ability Analysis ◽  
Half Diallel

Twenty-one progenies and the parents of a 7 × 7 half diallel cross of smooth bromegrass (Bromus inermis Leyss.) were evaluated at four locations in Alberta in each of two years, for genetic variation and genetic by environment interactions in the expression of their yield potentials. Years, locations and their interactions were highly significant in the combined analysis of variance. Combining ability analysis revealed that general combining ability (GCA) and specific combining ability (SCA) were both important in the expression of yield, including spring, fall and annual yield, whereas GCA was more important than SCA for yield per area. Although the genotype × environment interactions were all highly significant, variation accounted for by combining ability effects was generally higher than the interaction effects of GCA and SCA respectively, with environments. High average GCA effects for spring, fall and annual yield were demonstrated for the clones UA5, UA9 and B42. These together with the high average SCA effects suggested that the three clones could be included in a synthetic to develop high yielding cultivars. The results suggested that recurrent selections involving multi-location and multi-year testing seems necessary in breeding for high yielding bromegrass cultivars in Alberta.

COMBINING ABILITY ANALYSIS AND INTERRELATIONSHIPS BETWEEN THORNINESS AND YIELD TRAITS IN GOOSEBERRY

1970 ◽  
Vol 50 (4) ◽  
pp. 439-444 ◽  
Author(s):  
L. P. S. SPANGELO ◽  
C. S. HSU ◽  
S. O. FEJER ◽  
R. WATKINS
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
General Combining Ability ◽  
Fruit Yield ◽  
Yield Traits ◽  
Genetic Barrier ◽  
Berry Weight ◽  
Combining Ability Analysis ◽  
Positive Correlations ◽  
One Year

Combining ability and interrelationships among four characters were studied in six gooseberry (Ribes grossularia) progenies produced by crossing each of two thornless to three large-fruited cultivars. Measurements were recorded for four consecutive years for fruit yield and 100-berry weight, and for one year for thorniness and plant height. General and specific combining abilities were significant and their interactions with years were not significant for fruit yield and berry weight, and general combining ability was significant for thorniness. Genotypic correlations agreed closely with the phenotypic correlations. Significant positive correlations were obtained between fruit yield with berry weight and plant height. The nonsignificant correlations between thorniness with fruit yield, berry weight and plant height suggest no genetic barrier to combining thornlessness with these traits.

scholarly journals Evaluation of the specific combining ability (SCA) for yield and brix of seven Cucumis melo. L inbred lines of the sixth generation

2021 ◽  
Vol 20 (02) ◽  
pp. 1-9
Author(s):  
Tuan Q. Huynh
Keyword(s):  
Combining Ability ◽  
Cucumis Melo ◽  
Block Design ◽  
Inbred Lines ◽  
Specific Combining Ability ◽  
Soluble Solids ◽  
F1 Hybrid ◽  
Sixth Generation ◽  
Cucumis Melo L ◽  
Hybrid Lines

The objective of the experiment was to screen Cucumis melo L. inbred lines for high potential general combining ability and potential hybrids combinations for F1 hybridization. The experiment was conducted as a randomized complete block design (RCBD) with 29 treatments [21 hybrid combinations, control (TL3 hybrid) and seven Cucumis melo L. inbred lines I6], each with three replicates. Estimating the specific combining ability (SCA) of Cucumis melo L. inbred lines for breeding of F1 hybrid cultivars was carried out at the Research and Development Center for Hi-tech Agriculture in Ho Chi Minh City. Based on the specific combining ability of yield trait and total soluble solids (Brix) content of 21 hybrid lines from seven inbred lines following diallel method (Griffing 4 model), four potential hybrid lines (H41.6 x H58.6, H53.6 x H77.6, H32.6 x H41.6 and H53.6 x H58.6) yielded 10% higher than the control variety and gave fruits of oval shape, even fruit-net and low diseases infection.

scholarly journals HETEROSIS AND COMBINING ABILITY IN MELON (CUCUMIS MELO L.)

2019 ◽  
Vol 4 (5) ◽  
pp. 429-441
Author(s):  
A. A. EL- Sayed ◽  
Amani H. Gharib ◽  
M. A. F. A. El-Tahawey
Keyword(s):  
Combining Ability ◽  
Cucumis Melo ◽  
Cucumis Melo L
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