scholarly journals AN INVESTIGATION ON HETEROSIS, GENERAL AND SPECIFIC COMBINING ABILITY FOR POD YIELD AND ITS CONTRIBUTING PARAMETERS IN OKRA [ABELMOSCHUS ESCULENTUS (L.) MOENCH]

2021 ◽  
Vol 9 (08) ◽  
pp. 334-341
Author(s):  
Shailesh Kapadia ◽  
◽  
Kirti Patel ◽  
P.K. Patel ◽  
Mempal D. ◽  
...  
Keyword(s):  
Combining Ability ◽  
Quantitative Traits ◽  
Block Design ◽  
Abelmoschus Esculentus ◽  
F1 Hybrids ◽  
Research Centre ◽  
Pod Yield ◽  
Randomized Block Design ◽  
Per Se ◽  
Almost All

The heterosis and combining ability studies were conducted by utilizing modified Line X Tester mating design involving 6 Lines and 9 testers of Okra [Abelmoschus esculentus (L.) Moench]. The breeding material involving fifty four F1 hybrids along with 15 parents with one commercial check were evaluated during Kharif 2020 in a Randomized Block Design (R.B.D.) with three replications at Research Centre of Goldking Biogene Private Limited with an aim to estimate the magnitude of heterosis and to identify the good parents and good hybrid combinations for pod yield and other quantitative traits. Among the parents GKOF-1, GKOF-5 and GOM-7 were found to be good general combiners for pod yield per plot. Among the lines GKOF-3, GKOF-4 and GKOF-6 and testers GKOM-4, GKOM-5, GKOM-7 and GKOM-9 were found to be involved in exhibiting significant sca effects for almost all characters. Among the crosses GKOF-2 X GKOM-5, GKOF-1 X GKOM-8 and GKOF-6 X GKOM-7 exhibited high per se performance for pod yield per plot. Further the cross GKOF-1 X GKOM-7, GKOF-4 X GKOM-9 and GKOF-6 X GKOM-4 revealed highest positively significant sca effects for pod yield per plot.

scholarly journals Heterosis, Combining Ability, Genetic Diversity and their Interrelationship in Pigeonpea [Cajanus cajan (L.) Millspaugh]

2021 ◽  
Author(s):  
D. Chandra ◽  
S.K. Verma ◽  
A.K. Gaur ◽  
C. Bisht ◽  
A. Gautam ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Combining Ability ◽  
High Frequency ◽  
Block Design ◽  
General Combining Ability ◽  
F1 Hybrids ◽  
Randomized Block Design ◽  
Degree Of Dominance ◽  
Correlation Result ◽  
Per Se

Background: The development of superior hybrids is must to break the existing yield plateau ( less than 800 kg/ha) in pigeonpea and hence, the genetic mechanism governing the heterosis in pigeonpea must be decoded. Methods: The present study was laid down using randomized block design during kharif 2018-19 at GBPUAT, Pantnagar with 36 genotypes (8 parents and 28 F1 hybrids) of pigeonpea. The estimates of combining ability were evaluated by using the Griffing’s, Method II, Model I. The observations recorded for yield and related traits were subjected to the estimation of genetic diversity (GD) using the D2 statistics. The correlation between heterosis and different parameters viz., parental mean (PM), specific combining ability (SCA), mean of general combining ability (MGCA) and genetic diversity (GD) were estimated by using Pearson’s correlation. Result: High estimates of SCA variance and more than unity ( greater than 1) average degree of dominance for all the characters indicated the presence of over dominance. The SCA followed by MGCA were found to be most reliable parameters to predict the heterosis. The parents having high x low or high x high per se performance, good x poor GCA effects and with medium genetic diversity resulted in high frequency of heterotic hybrids.

scholarly journals Estimation of Heterosis in Okra [Abelmoschus Esculentus (L.) Moench] for Fruit Yield and Its Components Through Line × Tester Mating Design

2021 ◽  
Vol 50 (3) ◽  
pp. 531-540
Author(s):  
Shivappa M Karadi ◽  
CN Hanchinamani
Keyword(s):  
Analysis Of Variance ◽  
Block Design ◽  
Fruit Yield ◽  
Abelmoschus Esculentus ◽  
F1 Hybrids ◽  
Mating Design ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
Per Se ◽  
Positive Heterosis

Estimation the magnitude of heterosis for yield and yield contributing parameters of Okra was conducted. Fifty-four F1 hybrids were generated by line x tester mating design. These F1s along with 21 parents and commercial check (Mhyco-10) were evaluated in a randomized block design with two replications. Analysis of variance with respect to yield and quality characters in parents and hybrids were highly significant. This indicates the existence of high variation in parents and hybrids for different characters studied. Out of 54 cross combinations, seven crosses revealed the significant and positive heterosis over better parent. While 11 crosses showed positive and significant heterosis over economic parent. It is pertinent to mention that the crop has potential to produce the heterotic cross combinations and such crosses can be used for further improvement of this crop. Five crosses, namely L43 × T44, L22 × T36, L22 × T44, L53 × T36 and L31 × T23 were found to be potential for the production of fruit yield per plant and other desired characters. The high heterosis and per se performance was found in hybrid L43 × T44 over both better parents and standard check for fruit yield per plant. This indicates that the cross can be exploited commercially. Bangladesh J. Bot. 50(3): 531-540, 2021 (September)

scholarly journals COMBINING ABILITY STUDIES FOR GROWTH AND YIELD CHARACTERS OF BHENDI ABELMOSCHUS ESCULENTUS (L.) MOENCH)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
S. Kalaiselvan ◽  
S. Anuja
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
Block Design ◽  
Fruit Weight ◽  
Growth And Yield ◽  
F1 Hybrids ◽  
Randomized Block Design ◽  
Final Harvest ◽  
Weight Number ◽  
Number Of Branches

The present investigation consisted of 9 lines, 3 testers with their 27 F1 hybrids developed through line x tester mating fashion in randomized block design with three replications. Parents and hybrids differed significantly for gca and sca effects, respectively. Among the parents, maximum gca effect was found in EC 112241 and Aruna for inter node distance, EC 112241 and Arka Anamika for single fruit weight, EC 109454, EC 169344 and Arka Anamika for number of branches per plant, EC 169331 and Arka Anamika for number of fruits per plant, EC 109454 and Aruna for plant height at final harvest. The crosses exhibited maximum positive significant sca effect was observed in EC 112241 x Aruna, EC 109454 x Kashi Kranti and EC 112264 x Aruna were found as good specific combiners for single fruit weight, number of branches per plant and number of fruits per plant respectively. The hybrid EC 112264 x Aruna exhibited maximum significant negative sca effects for inter node distance and plant height at final harvest.

scholarly journals Estimation of heterosis for grain yield and yield attributes in bread wheat genotypes utilizing line x tester analysis (Triticum aestivum L. em. Thell)

2021 ◽  
pp. 85-95
Author(s):  
Amitava Roy ◽  
Anil Kumar ◽  
Karthick Babu S ◽  
Simran Sisodiya ◽  
Anu Singh
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Block Design ◽  
Triticum Aestivum L ◽  
Grain Weight ◽  
F1 Hybrids ◽  
Research Centre ◽  
Rabi Season ◽  
Yield Attributes ◽  
Randomized Block Design

Eleven genotypes of bread wheat were crossed with three testers in the rabi season of 2018-19 inline x tester mating fashion to obtain 33 F1 hybrids, which were evaluated with parents and two standard checks of wheat viz., UP 2855 and HD 2967. The experiment was laid out in randomized block design with three replications at Norman E. Borlaug Crop Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar in the rabi season 2019-20. Observations were recorded on various qualitative and quantitative characters including grain yield. The results obtained revealed significant differences among all the genotypes, indicating the presence of aconsiderable amount of genetic variability. The cross combinations SOKOLL x HI 1621, followed by QBP 12-11 x HI 1621, NAC/TH.AC//3*PVN/3/MIRLO/BUC/4/ 2*PASTOR/5/… x HD 3237 were observed to be the better heterotic F1s in terms of grain yield. The hybrid QLD 75 x HI 1621 was identified as the best heterotic combination for grain weight per spike and harvest index. Whereas, for grains per spike F1, NW 6036 x HI 1621, for 1000 grain weight F1, SOKOLL x HD3237, for spike length F1, NAC/TH.AC//3*PVN/3/ MIRLO/BUC/4/2*PASTOR/5/… x HD 3237, for peduncle length F1, VORB/4/D67.2/PARANA 66.270 x HI 1621 and for days to 75% heading and days to maturity F1, PRL/2*PASTOR*2//FH6-1-7/3/KINGBIRD#1//… x PBW 725 were observed to be the better heterotic combinations. The crosses with higher heterotic values may provide an opportunity for isolation of desirable purelines in advanced generations.

Influence of chemical and bio fertilizer on growth and yield of Okra (Abelmoschus esculentus L.) Moench

2016 ◽  
Vol 1 (01) ◽  
pp. 97-101
Author(s):  
Pankaj Sharma ◽  
A. K. Sharma ◽  
J. P. Singh ◽  
Himanshu Kaushik ◽  
Rajbeer . ◽  
...  
Keyword(s):  
Field Experiment ◽  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Abelmoschus Esculentus ◽  
Growth And Yield ◽  
Fresh Weight ◽  
Pod Yield ◽  
Randomized Block Design ◽  
Number Of Branches

A field experiment was conducted at the Horticulture Research Farm Department of Horticulture, J. V. College, Baraut, Bhagpat during the year 2011 with the cultiver “Arka Anamica” was done in Randomized Block Design (R.B.D) with three replication. The experiments consisted of 16 treatments viz. N1 (80:60:60) NPK (Kg.)/ha, N2 (60:40:40) NPK (Kg.)/ha, N3 (40:20:20) NPK (Kg.)/ha, B1 (Azotobacter) 7kg/ha, B2 (Phosphate Soluble Bacteria) 7kg /ha, B3 (Azotobacter + PSB) and B0 (Control). The Maximum results an different attributes viz. Plant Height (67.30 cm.), No. of leaves per plant (63.95), No. of green pod per branch (3.87), and Area of green pod (48.69 cm2), Days to 50 % germination (7.25) and Days to 50 % flowering (20.06) were recorded under the treatment B3, where as Azotobacter 7 kg/ha + Phosphate Soluble Bacteria 7 kg./ha. Compression to the treatment B1, where as Azotobacter 7 kg/ha and better results like, Number of branches per plant (4.58), leaf area (267.57 cm2), Number of green pod per plant (3.87), Fresh weight per green pod (8.11 gm.) and Green pod yield per plot (3382.56gm.) were recorded under the treatment B3 (Azotobacter 7kg/ha + PSB 7kg/ha), followed by N1 (80:60:60) NPK (Kg.)/ha and minimum results were found under the control.

scholarly journals Studies on Combining Ability in Eggplant (Solanum melongena L.) for Yield and Its Component

2020 ◽  
pp. 38-46
Author(s):  
. Pramila ◽  
M. L. Kushwaha ◽  
Udit Kumar ◽  
Ramesh Kumar Gupta ◽  
Bishwa Mitra Sinha
Keyword(s):  
Combining Ability ◽  
Block Design ◽  
Total Yield ◽  
Winter Season ◽  
Solanum Melongena ◽  
General Combining Ability ◽  
Research Centre ◽  
Plant Weight ◽  
Randomized Block Design ◽  
Fruit Diameter

Present investigation was carried out during autumn winter season 2013-14 and 2014-15 at the Vegetable Research Centre of GBPUA&T, Pantnagar with 43 genotypes including 10 lines, 3 testers and 30 F1’s of brinjal. The experiment was laid out in Randomized Block Design with three replications. The observations were recorded for 11 characters. Variances due to testers were greater than variances due to lines for most of the characters. The estimates of General Combining Ability (GCA) effect indicated that PB71, BB85, PB66, Swarn Syamli and DBL02 were best general combiner for earliness (days to 50% flowering), whereas the best specific cross was BRLVAR6 × DBL02. For weight of marketable fruits per plant PB66, SMB115, LC7, BRLVAR6 were best general combiners and SMB115 × DBL02, PB66 × Pant Samrat and IBWL 2001-1 × Pant Rituraj were best specific combiners. Pant Rituraj was found best general combining effect for plant height, fruit diameter, weight of marketable fruits per plant, number of unmarketable fruits per plant, total yield per plant and total yield per hectare. Pant Samrat showed good General Combining Ability (GCA) effects for number of primary branches per plant, number of marketable fruits per plant, weight of unmarketable fruits per plant and total number of fruits per plant. DBL02 was recorded best general combiner for earliness and fruit length. SMB115 and PB 66 were best general combiners for most of the yield characters. SMB115 × DBL02, PB66 × Pant Samrat and IBWL2001-1 × Pant Rituraj were showed highest Specific Combining Ability (SCA) effect for most of the characters. Therefore, these cross combinations could be commercially exploited for higher yield.

scholarly journals VARIABILITY AND TRAIT RELATION BETWEEN YIELD AND YIELD RELATED TRAITS IN FRENCH BEAN (PHASEOLUS VULGARIS L.)

2021 ◽  
Vol 21 (No 1) ◽  
Author(s):  
K.N. Shah ◽  
D.K Rana ◽  
V. Singh
Keyword(s):  
Block Design ◽  
Positive Association ◽  
Dry Weight ◽  
French Bean ◽  
Research Centre ◽  
Significant Positive Association ◽  
Randomized Block Design ◽  
High Heritability ◽  
Almost All ◽  
Pod Length

Seventeen genotypes of French bean were evaluated to study the genetic variability component and correlation. The research was conducted at Horticultural Research Centre, Chauras Campus, H.N.B. Garhwal University, Srinagar (Garhwal), Uttarakhand (India) during zaid season, 2018. The experiment was laid out in randomized block design with three replications. The genotypic and phenotypic coefficient of variation values were high for fresh weight of nodules & dry weight of nodules per plant, number of pods per plant, pod diameter, yield of green pods per plant, per plot & per hectare and number of picking. The high heritability was found for almost all the traits studied. The yield of green pods per plot had significant positive association both at genotypic and phenotypic levels for number of pods per plant, pod weight, pod length, pod diameter, yield of green pods per plant, number of picking and yield of green pod per hectare. The selection of high yielding genotypes should be given emphasis to number of pod per plant, pod weight, pod length, pod diameter and number of pickings.

scholarly journals COMBINING ABILITY FOR YIELD AND QUALITY ATTRIBUTES IN BHENDI (ABELMOSCHUS ESCULENTUS (L.) MOENCH)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
S. Kalaiselvan ◽  
S. Anuja
Keyword(s):  
Ascorbic Acid ◽  
Combining Ability ◽  
Acid Content ◽  
Block Design ◽  
Ascorbic Acid Content ◽  
F1 Hybrids ◽  
Quality Traits ◽  
Fruit Length ◽  
Yield And Quality ◽  
Randomized Block Design

The present experiment on bhendi consisted of 12 parents (9 lines and 3 testers) with their 27 F1 hybrids developed through line x tester mating design with three replications in randomized block design. Parents and hybrids differed significantly for gca and sca effects, respectively. Among the parents, maximum gca effect was found in EC 169329 and Aruna for fruit length, EC 102605 and Arka Anamika for fruit girth, EC 112241 and Arka Anamika for fruit yield per plant, EC 169335 and Aruna for ascorbic acid content, EC 109454 and Arka Anamika for mucilage content. The crosses EC 169331 x Kashi Kranti, EC 102605 x Arka Anamika and EC 169344 x Arka Anamika were found as good specific combiners for fruit length, fruit girth and yield per plant respectively. The hybrids EC 169335 x Aruna and EC 109454 x Arka Anamika exhibited maximum significant positive sca effects for quality traits like ascorbic acid content and mucilage content respectively.

scholarly journals Combining ability studies for yield and contributing traits in okra (Abelmoschus esculentus L. Moench)

2016 ◽  
Vol 8 (3) ◽  
pp. 1594-1598
Author(s):  
Arti Verma ◽  
Sonia Sood ◽  
Yudhvir Singh
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
Fruit Weight ◽  
Abelmoschus Esculentus ◽  
F1 Hybrids ◽  
Internodal Length ◽  
Fruit Length ◽  
Diallel Mating Design ◽  
Per Se ◽  
High Yielding Varieties

The present investigation was carried out to identify desirable parents and F1 hybrids in okra by involving eight diverse parents in a diallel mating design excluding reciprocals. Genotypes i.e., P-20 and VRO-4 for earliness; 9801 for first fruit producing node (-0.085), internodal length (-0.659) and fruit length (0.201); HU for average fruit weight (0.603); Tulsi-I for nodes per plant (0.429), fruit length (0.271) and plant height (12.068) were found good general combiners appeared to be worthy of exploitation in future breeding. It is suggested that involving these lines, new genotypes may be developed through multiple crossing for isolating high yielding varieties. The cross combinations VRO-4 × HU, Tulsi-I × SKBS-11, P-20 × Tulsi-I and P-8 × Tulsi-I showed high SCA effects as well as per se performance for yield per plant. The crosses showing high SCA effects and per se performance for yield per plant suggested that these hybrids may be exploited in further breeding programme.

scholarly journals Breeding for improving fibre yield and green biomass in sunnhemp (Crotalaria juncea L.) germplasm

2012 ◽  
Vol 37 (3) ◽  
pp. 369-376
Author(s):  
D Kumar ◽  
MK Tripathi ◽  
SK Sarkar ◽  
Arpita Das ◽  
Sanjoy Shill
Keyword(s):  
Plant Height ◽  
Combining Ability ◽  
Block Design ◽  
Specific Combining Ability ◽  
Cross Combination ◽  
Randomized Block Design ◽  
Fibre Yield ◽  
K 12 ◽  
Almost All ◽  
Positive Heterosis

Fifteen genetically diverse parental genotypes of sunnhemp belonging to different geographical origin were assessed to evaluate general and specific combining ability of parents and cross combinations, respectively, for selecting the superior parent combination. For this, fifteen parents and their 105 F1s were grown in a Randomized Block Design (RBD) with three replications and data were collected in respect of plant height, base diameter, green weight, fibre weight, stick weight and fibre percentage. Analyses of variances of diallel revealed that there was predominance of specific combining ability (sca) in almost all the characters except fibre percentage and general combining ability (gca) was significant only in case of plant height. From the gca effect of parents it can be seen that K-12 (B) and SUIN-056 showed good promise as general combiners and able to produce better cross combinations. However only one cross combination viz. SUIN–056 × SUIN–074 was recorded positive sca effects for all the characters. This cross combination along with SUIN–001 × SUIN–056 exhibited positive heterosis over the better parents in all the characters studied and can be used in breeding programme for producing improved sunnhemp population. Further, to exploit fully both additive and nonadditive variances present in this population, random as well as chain crossing among the promising crosses was found effective to exploit both additive and fixable epistatic effects. Bangladesh J. Agril. Res. 37(3): 369-376, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12080 

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