Estimation of the specific combining ability (SCA) of eight bitter gourd (Momordica charantia L.) inbred lines in the sixth generation

Estimating the Specific Combining Ability (SCA) of bitter gourd (Momordica charantia L.) inbred lines for breeding F1 hybrid cultivars was performed at the Research and Development Center for Hi-tech Agriculture in Ho Chi Minh City from September to December 2019. The objective of the study was to select the outstanding hybrid combinations from diallen method to produce F1 hybrid cultivars. The results from estimating the SCAs based on the productivity characteristic of 28 hybrid combinations produced from eight bitter gourd I6 inbred lines (Q16, Q65, Q80, Q86, Q75, Q06, Q81 and Q87) following diallen method showed that four promised hybrid combinations (Q65/Q80, Q86/Q75, Q06/Q81 and Q81/Q87) performed over 10% higher SCA values and heterosis than the control, and they were less susceptible to infectious diseases. Fruit characteristics and yield of four hybrid combinations included fruit length of 16.0 to 17.6 cm; fruit width of 6.2 to 6.8 cm; 132.2 to 151.7 g/fruit and average yield of 4.1 to 4.3 tons/1000 m2.

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

The Journal of Agriculture and Development ◽

10.52997/jad.1.02.2021 ◽

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.

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Estimation of general combining ability (GCA) in fifteen Cucumis sativus L inbred lines of the fifth generations

The Journal of Agriculture and Development ◽

10.52997/jad.1.04.2021 ◽

2021 ◽

Vol 20 (04) ◽

pp. 1-9

Author(s):

Hiet D. Hoang

Keyword(s):

Combining Ability ◽

Inbred Lines ◽

General Combining Ability ◽

Fruit Yield ◽

Ho Chi Minh City ◽

High Tech ◽

Cucumis Sativus L ◽

F1 Hybrid ◽

High Yields ◽

Development Center

The study on General Combining ability (GCA) of 15 cucumber inbred lines (I5) was carried out at the Research and Development Center for High-tech Agriculture, Ho Chi Minh City. The objective of the study was to identify the appropriate parental lines for producing F1 hybrid cucumber cultivars. Experimental materials included 15 cucumber inbred lines (I5) (L3, L9, L21, L22, L28, L32, L33, L36, L39, L61, L63, L69, L71, L74 and L78) and two test lines (T1 - TN 456 from Trang Nong Company, imported from Thailand and T2 - Cuct 1450 from Chia Tai - Thailand), forming 30 hybrid combinations by the method of topcross. The results showed that seven inbred lines including L3, L9, L21, L28, L33, L61 and L71 had high ability to combine with both T1 and T2 tester lines abby fruit yield with GCA index from + (0.8) to + (9.4). Evaluation of 30 cucumber hybrid was combinations on the growth and fruit yield characteristics showed that L28/T1 and L71/T2 hybrids were significantly different from other hybrids with high yields of 43.1 tons/ha and 41.3 tons/ha, respectively

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Estimation of gene action and combining ability of bitter gourd (Momordica charantia L.)

Progressive Agriculture ◽

10.5958/0976-4615.2021.00030.2 ◽

2021 ◽

Vol 21 (2) ◽

pp. 187-195

Author(s):

Daleep Kumar ◽

Mamta Pathak ◽

Nirmal Singh

Keyword(s):

Combining Ability ◽

Gene Action ◽

Momordica Charantia ◽

Bitter Gourd

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Performance of testers with different genetic structure for evaluation of maize inbred lines

Ciência Rural ◽

10.1590/s0103-84782012000500002 ◽

2012 ◽

Vol 42 (5) ◽

pp. 770-776 ◽

Cited By ~ 5

Author(s):

Lauro José Moreira Guimarães ◽

Glauco Vieira Miranda ◽

Rodrigo Oliveira DeLima ◽

Ciro Maia ◽

Lucimar Rodrigues de Oliveira ◽

...

Keyword(s):

Genetic Structure ◽

Combining Ability ◽

Genetic Variance ◽

Inbred Lines ◽

General Combining Ability ◽

Specific Combining Ability ◽

Genetic Base ◽

Maize Inbred Lines ◽

Single Cross ◽

Single Cross Hybrids

The objective of this study was to evaluate four maize testers for identification of superior inbreed lines in testcross. The four testers evaluated are cultivars with narrow or wide genetic base (single-cross hybrids and open pollinated varieties) and two kernel types (flint or dent). SynD and SynF testers are open pollinated varieties with dent and flint kernels, respectively, and FSH and DSH testers are single-cross hybrids with flint and dent kernels, respectively. SynD tester showed the biggest genetic variance among the maize inbreed lines in crosses. The effects of general combining ability (GCA) for lines and specific combining ability (SCA) for lines x testers were significant, whereas GCA effects for testers were not significant. SynD and SynF testers identified the largest number of lines with higher GCA. The DSH and FSH testers showed suitable to identify lines with high SCA. It was concluded that SynD and SynF testers are adequate to identify inbreed lines with high GCA effects, and it's possible to identify new lines with high heterotic potential in each one of the four testers.

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