scholarly journals Implementation of partial diallel analysis to determine general combining ability and agronomic character genetic parameters of shade-tolerant maize lines

2021 ◽  
Vol 911 (1) ◽  
pp. 012019
Author(s):  
Roy Efendi ◽  
Muhammad Azrai
Keyword(s):  
Combining Ability ◽  
Genetic Parameters ◽  
Block Design ◽  
Diallel Analysis ◽  
General Combining Ability ◽  
Leaf Length ◽  
General Ability ◽  
Randomized Block Design ◽  
High Heritability ◽  
Ear Height

Abstract Information about combining ability and genetic parameters guide maize breeders in selecting parents and gene action of the desired trait. This study aims to determine the general combining ability of the yield characters of shading tolerant maize lines and the genetic parameters of their agronomic characters. This research was conducted at IP2TP Bajeng in December 2020-March 2021. The study was arranged in a randomized block design with three replications. The genotypes used were nine hybrids obtain from a partial diallelic (2x6). The results showed that line SHD3 showed good general ability for yield. High heritability values were shown by variables days to anthesis, days to silk, plant height, ear height, leaf length, leaf width, 100 grains weight and ear diameter.

scholarly journals DAYA GABUNG DAN HETEROSIS KARAKTER VEGETATIF, GENERATIF, DAN DAYA HASIL JARAK PAGAR (Jatropha curcas L.) MENGGUNAKAN ANALISIS DIALEL

2016 ◽  
Vol 21 (1) ◽  
pp. 9
Author(s):  
RR. SRI HARTATI ◽  
SUDARSONO SUDARSONO
Keyword(s):  
Jatropha Curcas ◽  
Combining Ability ◽  
Fruit Set ◽  
Block Design ◽  
Diallel Analysis ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Days To Flowering ◽  
Jatropha Curcas L ◽  
Randomized Block Design

<p>ABSTRAK<br />Perakitan varietas unggul memerlukan informasi daya gabung tetua,<br />baik umum maupun khusus. Tetua dengan daya gabung umum (DGU)<br />tinggi berpotensi menghasilkan varietas sintetis atau komposit. Sementara<br />itu, tetua dengan daya gabung khusus (DGK) tinggi berpotensi<br />menghasilkan varietas hibrida. Tujuan penelitian adalah mengetahui daya<br />gabung tetua jarak pagar yang dapat menghasilkan hibrida atau populasi<br />komposit. Sepuluh tetua, yaitu 1 tetua berdaya hasil rendah, 6 menengah,<br />dan 3 tinggi digunakan dalam persilangan dialel lengkap. Evaluasi<br />dilaksanakan di Kebun Percobaan Balittri Pakuwon Sukabumi, mulai<br />Agustus 2008 sampai Juli 2011 menggunakan Rancangan Acak Kelompok<br />tiga ulangan. Karakter yang diamati yaitu tinggi tanaman, lingkar batang,<br />lebar kanopi, umur mulai berbunga, serta jumlah cabang total, cabang<br />produktif, infloresen, tandan, fruit set, dan buah per tanaman. Analisis<br />dialel menggunakan metode I Griffing. Hasil penelitian menunjukkan ratio<br />ragam DGU dan DGK lebih besar daripada satu ( DGU / DGK &gt; 1) pada<br />semua karakter yang dievaluasi. Tetua 3012-1 dan PT 15-1, yang berdaya<br />hasil tinggi, memiliki DGU tinggi pada karakter umur mulai berbunga,<br />lebar kanopi, serta jumlah cabang total, cabang produktif, infloresen,<br />tandan, dan buah. Tetua PT 33-2, yang berdaya hasil menengah, memiliki<br />DGU tinggi pada karakter umur mulai berbunga, serta jumlah cabang total,<br />cabang produktif, infloresen, dan buah. Sementara itu, tetua 575-3, yang<br />berdaya hasil rendah, memiliki DGU tinggi pada lingkar batang. Tetua PT<br />33-2, 3012-1, dan PT 15-1 berpotensi sebagai penyusun populasi dasar<br />untuk pembentukan varietas sintetik yang cepat berbunga dan berdaya<br />hasil tinggi. Tetua 575-3 berpotensi untuk dirakit sebagai varietas yang<br />memiliki lingkar batang besar dan berbunga lambat.<br />Kata kunci: daya gabung umum, daya gabung khusus, gen aditif,<br />komposit, Jatropha curcas L.</p><p>ABSTRACT<br />General Combining Ability (GCA) and Specific Combining Ability<br />(SCA) are important in creating high yielding varieties. A parent having<br />high GCA is appropriate to produce synthetic or composite varieties, while<br />high SCA is to produce hybrid. The research objective is to find out the<br />information of parents combining ability in Jatropha curcas L. Research<br />was conducted using diallel analysis. Ten genotypes i.e. 1 low yielding<br />parent, 6 medium, and 3 high were used to generate F1 arrays with full<br />diallel analysis. Evaluation was conducted at Indonesian Spice and<br />Industrial Crops Research Institute Experimental Station, using<br />Randomized Block Design from August until July 2011. The observation<br />were plant height, stem girth, canopy width, days to flowering, and<br />number of total branches, productive branches, inflorescences, bunches,<br />fruit set percentages; and fruit per plant. Diallel analysis was using<br />Griffing Model I. Results showed that general variance, each of GCA and<br />SCA ratio, is more than one ( GCA / SCA &gt; 1) in all evaluated characters.<br />High yielding parents of 3012-1 and PT 15-1 exhibited high GCA on days<br />to flowering, canopy width, and number of total branches, productive<br />branches, inflorescences, bunches, and fruits. Medium yielding parents of<br />PT 33-2 exhibited high GCA for days to flowering, number of total<br />branches, productive branches, inflorescences, and fruits. Low yielding<br />genotype of 575-3 exhibited high on stem girth. PT 33-2, 3012-1, and PT<br />15-1 could be used for developing early flowering and high yielding<br />varieties, while 575-3 was suitable for producing big stem girth and late<br />flowering varieties.<br />Key word: general combining ability, specific combining ability, additive<br />gen, composite, Jatropha curcas L.</p>

scholarly journals Heterosis performance in industrial and yield components of sweet corn

2010 ◽  
Vol 10 (3) ◽  
pp. 183-190 ◽  
Author(s):  
Aracelle Assunção ◽  
Edward Madureira Brasil ◽  
Jaison Pereira de Oliveira ◽  
Américo José dos Santos Reis ◽  
André Ferreira Pereira ◽  
...  
Keyword(s):  
Sweet Corn ◽  
Block Design ◽  
Sugar Content ◽  
Diallel Analysis ◽  
Flowering Plant ◽  
Index Number ◽  
Total Sugar Content ◽  
Randomized Block Design ◽  
Ear Height ◽  
Industrial Yield

Heterosis and its components were evaluated in a diallel crossing system of sweet corn. In the 38 treatments, eigth parents, 28 hybrids and two controls were used, arranged in a randomized block design with three replications.The diallel analysis followed the methodology of Gardner and Eberhart (1966). The following traits were evaluated: male and female flowering, plant and ear height, ear index (number of ears/number of plants), ºBrix, total ear weight, standard ear weight, industrial yield and total sugar content. There was genetic variability among genotypes, with significant differences except for the traits ear index, industrial yield and ºBrix.Heterosis was found for most traits. The mean heterosis of hybrids compared with the parents was positive for most traits. There was a contribution of additive and dominance effects.The contribution of dominant genes was greatest to flowering, plant and ear height and standard ear weight.

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 Combining ability of superior cacao clones for assembling high productivity and disease resistant cocoa

2021 ◽  
Vol 306 ◽  
pp. 01052
Author(s):  
Rubiyo ◽  
Nicho Nurdebyandaru
Keyword(s):  
Combining Ability ◽  
Block Design ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Resistance Test ◽  
High Productivity ◽  
Disease Resistant ◽  
Strain Combination ◽  
Randomized Block Design ◽  
Rot Disease

This research aimed to determine the potentiality of P1 and P2 as parents to produce superior strains of hybrid cacao by estimating general combining ability (GCA) and specific combining ability from crossed diallel among high yielding parents which are resistant to P. palmivora. The study was conducted at the Experimental Farm Sumber Asin, Malang, East Java, from 2010 to 2018. The research was arranged in Randomized Block Design (RBD) consisted of 10 hybrids and 5 parents so that the treatment used 15 genotypes. Each treatment consisted of 12 plants in triplicates. Resistance test on parents and F1 showed that all crossed combination strains were infected by pod rot disease (P. palmivora) with various intensity. The highest disease intensity was a strain combination of DR 1 x ICS 13 and the lowest one was ICS 13 and SCa 6. All crossed combination strains in the field had not shown symptoms of any pest infection. Cacao clones that have low GCA value based on the disease intensity were TSH 858, ICCRI 3 and SCa 6. These clones have the potential to be used in the assembly of disease-resistant and high-yielding cocoa hybrids in the future.

scholarly journals PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)

2015 ◽  
Vol 24 (1) ◽  
pp. 1
Author(s):  
Sri Romaito Dalimunthe
Keyword(s):  
Combining Ability ◽  
Block Design ◽  
Diallel Analysis ◽  
Inbred Lines ◽  
Fruit Weight ◽  
High Genetic Diversity ◽  
Diallel Crossing ◽  
Recessive Genes ◽  
High Heritability ◽  
Materials Used

High genetic diversity in chili is the basis for a chili breeding program. One of the methods to increase diversity is through crossing. There are several crossing designs in order to produce new varieties, such as diallel crossing. Diallel analysis is a method for studying the inheritance of characteristics from various crossings. The aim of this research was to estimate the genetic parameters, the general combining ability (GCA) and specific combining ability (SCA) of six inbred lines of chili. The research was conducted in November 2008-May 2009 at the Experimental Farm Leuwikopo IPB. Genetic materials used were six inbred lines of chili (IPB C2, IPB C9, IPB C10, IPB C14, IPB C15 and IPB C20) and the F1s of the combination of six inbred lines. The experimental design was Randomized Complete Block Design with a single factor, namely genotype. The number of genotypes were 36 with three replications, so there were 108 units of experiment. The crossing design used was diallel crossing design. The results showed that there were no interaction between genes on the dichotomous height and fruit weight, significant additive effects, the control genes spread unevenly, and relatively high heritability values. Genotype which carried recessive genes the most was IPB C14 and genotype which carried the most dominant genes was IPB C10. IPB C10 showed the highest GCA for dichotomous height and IPB C2 showed the highest GCA on fruit weight. The crossing between IPB C2 x IPB C10 showed the highest SCA for dichotomous height. For fruit weight, crossing of IPB C2x IPB C14 had the highest SCA. Crossing combination of IPB C2 x IPB C14 was the best hybrid.

scholarly journals Combining ability of inbred lines of maize and stability of their respective single-crosses

2003 ◽  
Vol 60 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Aurélio Mendes Aguiar ◽  
Luciana Aparecida Carlini-Garcia ◽  
Adelmo Resende da Silva ◽  
Mateus Figueiredo Santos ◽  
Antonio Augusto Franco Garcia ◽  
...  
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Block Design ◽  
Diallel Analysis ◽  
Inbred Lines ◽  
Breeding Programs ◽  
Randomized Complete Block Design ◽  
Single Cross ◽  
Ear Height

The utilization of diallel crosses for identification of superior combinations is a common practice in maize (Zea mays L.) breeding programs. This methodology allows the estimation of the combining ability of genotypes being evaluated. In this work, five inbred lines were evaluated as to their general (GCA) and specific (SCA) combining abilities, by using a complete diallel scheme. The single-crosses produced between these inbred lines were evaluated in seven environments, along with two checks, by using a randomized complete block design. Traits analized were: grain yield, plant height, ear height, ear placement, and prolificacy. A diallel analysis was carried out, following an adaptation of Griffing's method IV, in addition to hybrid stability and adaptability analyses. Significant differences were detected for entries and environments for all traits. The interaction genotype vs. environment was significant for all traits. GCA's were significant for all traits, while SCA's were non-significant only for ear placement. For grain yield, both additive (GCA) and non-additive (SCA) effects were important, while for the remaining traits additive effects were more important. The high yielding single-cross was obtained from the cross of lines L-08-05F and L-38-05D. Those inbred lines showed higher GCA's and their cross also had high SCA; also, it is responsive to environment improvements and reasonably stable. The second in rank high yielding single-cross, L-46-10D x L-08-05F, showed wide adaptability and stability.

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 Combining Ability and Heterosis in Diallel Analysis of Maize (Zea mays L.) Lines

2020 ◽  
Vol 9 (1) ◽  
pp. 188-200
Author(s):  
Francis Chukwuma Onejeme ◽  
Emmanuel Ogbonna Okporie ◽  
Chinedu Emmanuel Eze
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Block Design ◽  
Diallel Analysis ◽  
Diallel Cross ◽  
Maize Breeding ◽  
Ear Height ◽  
Check Variety ◽  
Additive Genetic Effects ◽  
Positive Heterosis

A sound breeding program for maize improvement is very important to meet the demands of the growing population. Therefore, combining ability and heterosis were studied in a 4 x 4 full diallel cross in maize for growth attributes, yield and its contributing traits. Randomized Complete Block Design (RCBD) with four replicates was used to study the general combining ability of parents, specific combining ability of F1s (including reciprocals) and heterosis of the F1s over commercial check variety on selected agronomic characters. Genotype was highly significant for all the traits studied. The combining abilities (GCA and SCA) and reciprocal mean squares were highly significant for most studied characters. The ratio of GCA/SCA was not less than unity for studied traits excepted for days to anthesis and ear height. The results indicated that the additive genetic effects were more important and played major role in studied traits. Thus, results revealed GCA effects for the parental lines (PL). Where ‘PL2’ was excellent combiner for number of tassels and cob circumference and ‘PL3’ was good combiner for days to silking and grain yield (t.h-1). While ‘PL4’ for short height. Majority of the F1s from the GCA effects showed high SCA effects. This F1 (PL2 x PL3) performed best amongst. However, several reciprocals were not desirable. Heterosis estimation was carried out using a commercial check, Oba super II. When commercial check was used, the percent heterosis especially on grain yield varied from -8.89 to 22.62%. Among the twelve F1s, nine of the crosses exhibited significant positive heterosis for grain yield (t.h-1). Those F1s that showed significant positive and/or negative desirable traits for SCA effects and significant positive heterosis could be used for varietal development in maize breeding. And conservation of those parents that exhibited high GCA effects be considered as well.

scholarly journals Daya Gabung dan Heterosis Galur Jagung (Zea mays L.) pada Karakter Hasil dan Komponen Hasil

2017 ◽  
Vol 45 (2) ◽  
pp. 124
Author(s):  
Eko Purnomo Setyowidianto ◽  
Nur Basuki ◽  
Dan Damanhuri
Keyword(s):  
Combining Ability ◽  
Zea Mays L ◽  
Block Design ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Randomized Block Design ◽  
Inbred Parent ◽  
Diallel Mating Design ◽  
Corn Productivity ◽  
Better Than

Corn productivity can be improved using hybrid varieties. Evaluation of inbreds and hybrids were required to obtain information of general combining ability and specific combining ability. The objective of this research was to find out inbred combining ability and hybrids heterosis from crosses of 10 inbreds (5 inbreds from PT. Agri Makmur Pertiwi and 5 introduced inbreds) based on yield and yield components character. Diallel mating design using method 2 model 1 of Griffing model and the testing were conducted from January to August 2012. The tests using a randomized block design with three replications. PWM-1 (PT. Agri Makmur Pertiwi group) and PWI-5 (introduced group) have GCA better than other inbreds on grain yield, ear length, ear diameter, number of seed rows, shelling percentage and 1,000 seeds weight. Hybrids PWM-5 x PWM-1, PWI-5 x PWM-1 and PWI-5 x PWM-5 have a positive SCA values and also inbred parent have a positive GCA value. Intercrosses of introduced group had the high heterosis for all characters. PWI-4 x PWI-2 had highest SCA and heterobeltiosis for ear diameter and 1,000 seeds weight, and for number of seed rows was PWI-5 x PWI-2.<br /><br />Keywords: diallel cross, heterobeltiosis<br /><br />

scholarly journals Variabilitas dan Korelasi Genotipik dan Fenotipik 10 Genotipe Tanaman Nilam (Pogostemon cablin Benth.)

2020 ◽  
Vol 22 (2) ◽  
pp. 59
Author(s):  
Resti Wahyu ◽  
M Tahir ◽  
Indrawati Wiwik
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Leaf Length ◽  
Growth And Yield ◽  
Oil Yield ◽  
Randomized Block Design ◽  
Pogostemon Cablin ◽  
High Heritability ◽  
Wet Weight ◽  
Growth Character

<p>Patchouli Aceh Lhokseumawe is a patchouli that has a high oil content.  However, the Lhokseumawe species have narrow plant genetic variation due to vegetative propagation. This study aims to analysis broad genetic variability and phenotypes, correlation between growth character and strong yield character to help selection in plant breeding.  The research was conducted at experimental field of the Politeknik Negeri Lampung in April until October 2018.  The research used Randomized Block Design (RBD) with 10 genotype and 3 replications.  Analysis of the data used is ANOVA, if significantly different followed by the LSI 5%, then using variability genotype and phenotype and t test. The result showed that NPL 1 had a better appearance than the Lhokseumawe (local) genotype in the LSI 5%.  Extensive genotype variability was found ini g/plant dry weight character and ton/ha dry terna production, broad phenotype variability was found in all observed characters.  High heritability is found in the characters of stem diameter, wet weight, dry weight, and production of dry ton/ha. Significantly positive phenotypic correlations that have high oil yield are characterized by the characteristics of dry weight, ton/ha dry cattle production, wet weight, and harvest index. Positive genotypic correlations were evident between growth and yield characters, namely the oil yield with leaf length, and leaf width.</p>

Sign in / Sign up

Export Citation Format

Share Document