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Line × Tester analysis
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The present investigation was carried out in order to obtained information on the mean performance of cross combinations for genetic improvement in brinjal developed using line x tester analysis at PG student’s research farm, College of Horticulture, Rajendranagar, Hyderabad.
14p
cothumenhmong11
11-05-2021
13
2
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The increasing demand for baby corn intended us towards the development of single cross hybrids for baby corn speciality traits. The experiment consisted of the crossing of nine lines with three testers in line × tester mating design where the layout of the field was done under RCBD design with two replications at the University of Agricultural Sciences Dharwad during Kharif season 2019.
9p
caygaocaolon11
21-04-2021
15
1
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The objective of the present study is to reveal the diversity in the inbred lines and testers based on morphological traits and simple sequence repeat markers.
9p
chauchaungayxua10
19-03-2021
11
2
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Heterosis phenomenon due to its enhanced expression for the manifestation of different characters in both (positive and negative) direction helps in a crop improvement, therefore heterosis breeding serves as an important tool in tomato (Fageria et al., 2001; Duhan et al., 2005; Thakur et al., 2004).
13p
chauchaungayxua10
19-03-2021
13
1
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The present study was carried out during Rabi seasons of 2017-18 & 2018-19 at Main Experimental Station, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.). The experimental materials comprised of twenty genetically diverse varieties/strains and their 105 crosses. The 26 parents were involved in a crossing programme to develop a line x tester set (21 lines + 5 testers + 3 checks) during Rabi season of 2017-18in Randomized Block Design.
12p
chauchaungayxua11
23-03-2021
6
1
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The experiment was undertaken on Line x Tester analysis for, grain yield and its component traits in crosses of A and R lines of rabi sorghum at All India Co-ordinated Sorghum Improvement Project, M.P.K.V., Rahuri, during the year 2017-18 with objectives to study the heterosis of parents and hybrids.
18p
chauchaungayxua11
23-03-2021
12
2
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The present investigation was undertaken with the objectives to assess the magnitude of heterosis and combining ability effects of 35 hybrids resulted from Line x Tester mating design involving seven lines and five testers parents along with the standard check (GHB 558).
8p
cothumenhmong9
18-01-2021
14
2
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Keeping the above in view, the present line × tester analysis was planned to estimate general and specific combining ability effects to identify better parents as well as superior cross combinations for further improvement in wheat.
12p
cothumenhmong9
04-01-2021
16
1
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A study was carried out using 48single cross experimental maize hybrids developed from 16 lines (with high test weight and per se performance) and three testers crossed in Line × Tester design and were evaluated at three diverse environments, viz. Arabhavi (Northern dry zone), Agriculture Research Stations of Nippani and Main Agricultural Research Station (MARS) Dharwad (Northern transition zone) in Karnataka, for their grain yield stability.
11p
gaocaolon9
22-12-2020
12
1
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Line × Tester analysis was carried out using 13 lines and 3 testers to estimate heterosis on seed yield and its contributing characters in Opium Poppy. The 39 resulting hybrids along with their parents were evaluated in Randomized Block Design during Rabi 2019-2020. The analysis of variance revealed the presence of variability among parents and crosses for the characters studied.
8p
trinhthamhodang9
16-12-2020
35
2
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The present investigation was carried out to study heterosis, combining ability and gene interactions over environments of parents and their crosses in kharif 2018. The experimental material, consisting of eleven lines, five testers and their resultant 55 hybrids along with a commercial hybrid check „OH-102‟ of okra were sown in three different locations of south Gujarat viz., College farm, NMCA, NAU, Navsari (E1), Cotton Research Sub Station, NAU, Achhalia (E2) and Regional Rice Research Station, NAU, Vyara (E3).
16p
trinhthamhodang1216
19-11-2020
17
2
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Combining ability analysis (GCA) enables plant breeders to select parental lines for crossing and provides the opportunity to understand the nature of gene actions involved in the inheritance of desired traits. In this study, we used a line x tester mating design to generate 30 hybrid crosses using three restorer (R) and ten cytoplasmic male sterile (CMS; A) lines.
17p
trinhthamhodang1216
19-11-2020
18
2
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Major improvement in sunflower breeding requires heterotic hybrids which can be achieved by tapping combining ability of F1 hybrids developed from crossing of two genetically diverse female lines with male testers. In the present study, 56 hybrids were evaluated derived from four lines and fourteen testers’ crosses in a line × tester mating design. The analysis of variance revealed existence of highly significant differences (p=0.05) among genotypes, parents and parents vs crosses indicating the presence of heterosis for quantitative traits in sunflower.
12p
caygaocaolon8
07-11-2020
16
2
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Combining ability analysis was done in Line X Tester mating design by using 7 lines, 3 testers and 21 F1‟s in a randomized block design with two replications during 2013-14 in sowing under water stress and non-stress environments. The analysis of genetic components revealed that both additive as well as non-additive components were prevalent for the control of grain yield and its components under both water stress and non-stress environments except spike length in under stress environment.
8p
angicungduoc8
07-11-2020
13
2
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Diallel analysis was done using 60 F1s obtained from 15 lines x 4 testers in line x tester mating design. Highly significant gca and sca various were observed. Non additive genetic variances were predominant for most of the characters.
9p
nguathienthan8
20-10-2020
11
1
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An experiment was conducted to evaluate the performance of 54 F1 developed by crossing of 18 lines with 3 testers. Analysis of variance revealed highly significant difference in treatments, parents, crosses and line × tester for days to 50% flowering, plant height, flag leaf area and grain yield per plant under both normal and saline conditions. Parent vs.
14p
nguathienthan8
20-10-2020
18
2
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Combining ability for grain yield and its components in pearl millet was studied in 48 hybrids developed by crossing six A- and their six B-lines with 8 R-lines in a line x tester mating design. The three A- lines viz. 81A1, 81A4 and 81A5 and their corresponding B- lines represented three different systems of male sterility and were very diverse. The 12 parents and the 48 hybrids were grown separately in contiguous blocks in 2R × 4.0 m × 0.45 m in randomized block design with three replications in two environments viz.
8p
nguathienthan8
20-10-2020
10
1
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Heterosis is one of the greatest practical achievements of plant breeding and has been extensively used in crop improvement in okra. The production of hybrid cultivars with higher fruit yield and quality characters has become increasingly important in recent years due to continuous demand. In the present study, 14 genetically diverse okra parents were crossed in Line x Tester fashion to explore magnitude of heterosis.
11p
nguaconbaynhay8
13-10-2020
14
1
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Development of drought tolerant lines becomes increasingly more important in maize. Therefore, an investigation was undertaken with six lines VIM 57 (L1), VIM 61 (L2), UMI 1200 (L3), VIM 244 (L4), VIM 15 (L5), VIM 108 (L6) and four testers VIM 236 (T1), VIM 93 (T2), VIM 418 (T3), VIM 153 (T4) which were crossed in a Line x Tester mating design to synthesize twenty four hybrids and were evaluated under contrasting soil moisture regimes to identify the potential parents, superior cross combinations and to formulate the breeding strategies for yield improvement in maize.
8p
nguaconbaynhay8
13-10-2020
16
2
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A line x tester analysis in sesame was carried out with ten lines and four tester to estimate the combining ability analysis during kharif 2015-16 at the Project Coordinating Unit Sesame and Niger, JNKVV, Jabalpur.
10p
chauchaungayxua8
03-10-2020
11
1
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