Line × tester analysis in rapeseed: Identification of superior parents and combinations for seed yield and its components

<p>This research was carried out to investigate the genetic structure of the 20 F1s rapeseed hybrids established from five female moderate maturity lines and four early maturity male testers, to determine parents showing general combining ability (GCA) and detect crosses showing specific combining ability (SCA). Significant variance of parents and crosses for all the traits indicated the existence of significant genetic variation among the parents and their F1 cross combinations. Significant variance of parents <em>vs. </em>crosses revealed significant average heterosis for all the traits except first pod height and seeds per pod. High narrow-sense heritability estimates for number of branches and pods length, indicate the importance of additive genetic effects for these traits. Hybrid performance was generally better than parental performance for all the traits except number of branches and also the genetic variation of lines × testers for all the traits were more than lines and testers. Most of the crosses with high mean value of pods per plant were yielded from the parental lines with high mean value of this trait. The crosses including L41×Foma2, Zafar×R42 and L22B×R38 with significant positive SCA effects of seed yield had also high mean values (3400, 3311.3 and 2904.2 kg ha-1 , respectively) of this trait.</p>

Download Full-text

Line × tester analysis in rapeseed: Identification of superior parents and combinations for seed yield and its components

Open Agriculture ◽

10.1515/opag-2016-0012 ◽

2016 ◽

Vol 1 (1) ◽

Author(s):

Valiollah Rameeh

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Selection Criterion ◽

Genetic Effects ◽

Narrow Sense Heritability ◽

Mean Values ◽

Early Maturing ◽

Additive Genetic Effects ◽

Pod Length ◽

Additive Genes

AbstractThe objectives of this research were to investigate the genetic structure of the 20 F1s rapeseed hybrids established from five female moderate maturing lines and four early maturing male testers, determine parents showing general combining ability (GCA) and assess crosses demonstrating specific combining ability (SCA). Significant mean squares of lines and testers determined GCA and confirmed the presence of additive genes that were influencing the traits, while the significance of line×tester interactions indicated the importance of SCA of parents and demonstrated the importance of dominance or non-additive genetic effects. Significant variance of parents vs. crosses revealed significant average heterosis for all the traits except first pod height and seeds per pod. High narrow-sense heritability estimates for number of branches and pod length indicated the importance of additive genetic effects for these traits. Significantly positive correlation was exhibited between GCA effects on pods on main raceme and seed yield and, therefore, the GCA effect on pods on main raceme can be used as indirect selection criterion for improvement of seed yield. The crosses L41×Foma2, Zafar×R42 and L22B×R38 recorded significant positive SCA effects and high mean values of seed yield of 3400, 3311.3 and 2904.2 kg ha-1, respectively.

Download Full-text

Combining ability and breeding potential of oilseed rape advanced lines for some of important quantitative traits

Agricultura ◽

10.1515/agricultura-2017-0013 ◽

2017 ◽

Vol 14 (1-2) ◽

pp. 9-16

Author(s):

Valiollah Rameeh

Keyword(s):

Oilseed Rape ◽

Seed Yield ◽

Combining Ability ◽

Genetic Effects ◽

Brassica Napus L ◽

Narrow Sense Heritability ◽

Early Maturity ◽

Days To Flowering ◽

Flowering Duration ◽

Additive Genetic Effects

AbstractInformation on estimates of combining ability of the promising lines of breeding material is important for evolving higher yielding varieties of oilseed rape (Brassica napus L.). An experiment was conducted to quantitatively examine the genetic parameters of phenological traits, plant height, pods on main raceme, pods per plant and seed yield for eight oilseed rape genotypes using a half-diallel crosses. The result of the diallel analysis revealed significant mean squares of general and specific combining abilities (GCA and SCA) for all studied traits, indicating the importance of additive and non-additive genetic effects for these traits. On the other hand estimation of high narrow-sense heritability estimates for days to flowering, duration of flowering and pods on main raceme, indicated the prime importance of additive genetic effects for these traits. L420 and L401 with significant negative GCA effects for days to flowering and days to maturity were suitable for yielding early maturity combinations. L41, Zafar and L22 with significant positive GCA effects for seed yield were superior parents for increasing seed yield. The crosses with significant positive SCA effects for seed yield had at least one parent with significant positive GCA effects for this trait. The crosses including L41×L22, L41×LF2, Zafar×L22 and Zafar×L420 with seed yield of 3421.7, 3400, 3348.1 and 3311.3 kg ha-1 could be promising for determination of superior recombinants for high seed yield coupled with other growth characters in advanced generations of segregation.

Download Full-text

Combining Ability of Plant Height and Yield components in Indian Mustard (Brassica junceaL.Czern & Coss.) under Salt affected Soil using Line×Tester Analysis

Journal of AgriSearch ◽

10.21921/jas.v3i2.11267 ◽

2016 ◽

Vol 3 (2) ◽

Cited By ~ 2

Author(s):

SHAILESH CHAND GAUTAM ◽

MP Chauhan

Keyword(s):

Plant Height ◽

Seed Yield ◽

Combining Ability ◽

Yield Components ◽

Indian Mustard ◽

Heritability Estimate ◽

Genetic Effects ◽

Narrow Sense ◽

Narrow Sense Heritability ◽

Additive Genetic Effects

Line × tester analysis of twenty lines and three testers of Indian mustard (Brassica juncea L. Czern & Coss.) cultivars were used to estimate general combining ability (GCA), specific combining ability (SCA) effects, high parent heterosis and narrow-sense heritability estimate for plant height, yield components and seed yield. Significant variance of line x tester for the traits like pods per plant and seed yield indicating non additive genetic effects have important role for controlling these traits. Significant mean squares of parents v/s crosses which are indicating significant average heterosis were also significant for all the traits except seeds per pod. High narrow-sense heritability estimates for all the traits except seeds per pod exhibited the prime importance of additive genetic effects for these traits except seeds per pod. Most of the crosses with negative SCA effect for plant height had at least one parent with significant negative or negative GCA effect for this trait. For most of the traits except pods per plant, the efficiency of high parent heterosis effect was more than SCA effect for determining superior cross combinations.

Download Full-text

Genetic analysis of Plant Height, Yield Components and Seed Yield in Rapeseed (Brassica Napus L.) Cultivars

Plant Breeding and Seed Science ◽

10.2478/v10129-011-0070-6 ◽

2014 ◽

Vol 67 (1) ◽

pp. 61-74

Author(s):

Valiollah Rameeh

Keyword(s):

Brassica Napus ◽

Plant Height ◽

Seed Yield ◽

Combining Ability ◽

Seed Weight ◽

Main Axis ◽

Brassica Napus L ◽

Narrow Sense Heritability ◽

Recessive Genes ◽

Additive Genetic Effects

Abstract Half F2 diallel crosses of spring rapeseed (Brassica napus L.) varieties along with their parents were evaluated for plant height, first siliqua height, siliquae on main axis, siliquae per plant, 1000-seed weight and seed yield. The Analysis of variance based on Cockerham’s method revealed significant mean squares of general combining ability (GCA), specific combining ability (SCA) for all the traits indicating that both additive and non-additive genetic effects were involved in controlling these traits. Parent vs crosses mean square which is indicating average heterosis was significant for all the traits. In Hayman’s method the regression lines estimated for all the traits except plant height cut the Wr axis below the origin in the negative zone, suggesting the overdominance type of gene action for these traits except plant height. Based on the array points on the regression lines, 19H had maximum dominant genes for siliquae on main axis, siliquae per plant 1000-seed weight and seed yield, being closest to the origin, while 0ption500 possessed recessive genes for first siliqua height, siliquae per plant and 1000-seed weight, as evidenced by its distant position from the origin. Due to low narrow-sense heritability estimates for most of the traits, selection for improving these traits should be carried out in delayed segregating generations.

Download Full-text

Combining ability and heritability estimates of main agronomic characters in rapeseed breeding lines using line × tester analysis

Journal of Agricultural Sciences Belgrade ◽

10.2298/jas1203111r ◽

2012 ◽

Vol 57 (3) ◽

pp. 111-120 ◽

Cited By ~ 1

Author(s):

Valiollah Rameeh

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Yield Components ◽

Seed Weight ◽

Oil Content ◽

Genetic Effects ◽

Narrow Sense Heritability ◽

Breeding Lines ◽

Heritability Estimates ◽

Additive Genetic Effects

To estimate the general and specific combining ability (GCA and SCA) effects of plant height, yield components, seed yield and oil content, three testers and six lines of spring type of rapeseed varieties were crossed using line ? tester fashion. Significant mean squares of parents and crosses for all the traits indicated significant genetic variation among the parents and their F1 crosses. Significant mean squares of parents vs crosses revealed significant average heterosis for all the traits except seeds per pod, 1000-seed weight and oil content. High narrow-sense heritability estimates for all the traits except seeds per pod, indicating the importance of additive genetic effects for these traits. Due to more importance of additive genetic effects for most of the traits, only a few of the crosses exhibited significant SCA effects. A significant positive correlation between seed yield and some of yield components including pods on main axis, pods per plant and 1000-seed weight indicates that these traits can be used as suitable selection criteria for improving of seed yield. The crosses including Opt ? R01, RG06 ? R01, RG06 ? R08 and RGS3 ? R08 with 3241.91, 3213.68, 3334.28 and 3237.45 kg ha-1 of seed yield detected as prior combinations for improving of this trait and all of these combinations had also positive SCA effect for this trait.

Download Full-text

Genetic Parameters for Determining Useful Parents in Mungbean (Vigna radiata (L.) Wilczek) Breeding for Early Maturity, Small Seed Size, and High Seed Yield

Scientifica ◽

10.1155/2021/3910073 ◽

2021 ◽

Vol 2021 ◽

pp. 1-7

Author(s):

Trustinah ◽

Rudi Iswanto ◽

Ratri T. Hapsari ◽

Novita Nugrahaeni ◽

Rudy Soehendi ◽

...

Keyword(s):

Seed Size ◽

Seed Yield ◽

Combining Ability ◽

Seed Weight ◽

Genetic Parameters ◽

Early Maturity ◽

Small Seed ◽

100 Seed Weight ◽

High Seed Yield ◽

Number Of Branches

Early maturity, small seed size, and high seed yield are important characters of mungbean in Indonesia. The objective of the study was to determine the useful parents in mungbean crosses for early maturity, small seed size, and high seed yield varieties by estimating the genetic parameters and their inheritance. The study was conducted at the ILETRI, Malang, East Java, Indonesia, during the dry season of 2014. 20 F1 and 5 parents were evaluated using a randomized block design, repeated three times. Results of the study showed that all observed traits showed the importance of both additive and dominance gene effects. The relative value of general combining ability (GCA) was greater than specific combining ability (SCA) for number of pod clusters per plant, number of branches per plant, plant height, days to maturity, and 100-seed weight which indicated the importance of additive gene effect. The dominance gene effect occurred on number of pods and seed yield per plant. Among five parents, G3 was the best combiner for all the observed characters except pod length; therefore, G3 could be exploited for late maturity, small seed size, high number of branches and pod cluster, and high seed yield. G5 has a high GCA for 100-seed weight. G1 and G2 have good GCA for early maturity. G3 and G5 genotypes are useful as parents in mungbean breeding for small and large seed size varieties, respectively. The best combination for seed yield was G2 × G3 and G3 × G1 crosses and could be proceeded with selection for early maturity, small seed size, and high seed yield varieties.

Download Full-text

Combining ability of phenological traits and seed yield in spring rapeseed genotypes

Plant Breeding and Seed Science ◽

10.1515/plass-2015-0021 ◽

2015 ◽

Vol 71 (1) ◽

pp. 47-56

Author(s):

Valiollah Rameeh

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Selection Criteria ◽

Genetic Parameters ◽

Genetic Effects ◽

Narrow Sense Heritability ◽

Quantitative Characteristics ◽

Selection For ◽

Efficiency Of Selection ◽

Additive Genetic Effects

Abstract Six parents and their 15 F2 diallel progenies, totally 21 genotypes, were evaluated for genetic parameters of quantitative characteristics. The traits of interest were growing degree days (GDDs) from sowing to the flowering (DDF), to end of flowering (DDE), flowering period (DFP), to maturity (DDM) and seed yield (SY). Significant mean squares of general combining ability (GCA) was exhibited for DDF, DDE, DFP, DDM and seed yield indicating significant differences of GCA effects of parents for these traits. Significant mean squares of specific combining ability (SCA) for all the traits exhibited the importance of non additive genetic effects for the traits. Significant ratio of MS(GCA)/MS(SCA) and high narrow sense heritability estimates for DDF, DDE, DDM indicating the prime importance of additive genetic effects for controlling these traits. DFP was also less heritable than the other phonological traits, so the efficiency of selection for this trait will be low. All of the combinations with significant negative SCA effects for DDM had at least one parent with significant negative GCA effect for this trait. PF7045/91 with significant positive GCA effect of SY, was best combiner for improving SY. Significant positive correlation between DDM and each of two traits including DDF and DDE, indicating these traits can be used as indirect selection criteria for improving DDM.

Download Full-text

Genetic variability in Indian mustard (Brassica juncea L. Czern and Coss)

International Journal of Agricultural Invention ◽

10.46492/ijai/2016.1.1.5 ◽

2016 ◽

Vol 1 (01) ◽

pp. 30-34

Author(s):

R. K. Gupta ◽

V. K. Dwivedi

Keyword(s):

Plant Height ◽

Seed Yield ◽

Seed Weight ◽

Oil Content ◽

Indian Mustard ◽

Mean Value ◽

Mean Values ◽

Quantitative Characters ◽

Biological Yield ◽

The Mean

The data were recorded on five random selected plants for 12 quantitative characters and statistical analyzed. The analysis of variance for all the twelve characters is showed the mean square due to genotypes was highly significant. The mean values of various characters like days to 50 per cent flowering were recorded maximum for genotype IC560719 and Pusa Karishma (84.00 days)with mean 69.08 days The maximum days to 75% maturity were observed in IC-560700 genotype (142.00 days) with a mean of 135.07 days. The plant height highest recorded in the genotype IC-560696 (217.60 cm) with mean of 188.14 cm. The maximum number of primary branches per plant (16.47) was recorded in the genotype NPJ-113 with mean of 10.13. The genotype NPJ-113 produced maximum number of secondary branches per plant (35.47) with mean of 19.78. The maximum length of siliqua was recorded for Kranti (7.03) with mean of 5.24cm. The maximum number of seeds per siliqua was recorded in Kranti genotype (19.13) with mean value 14.91. The maximum 1000-seed weight recorded 5.57g for Pusa Jai Kisan with mean wt. 3.96 g. Pusa Mustard-21 produced highest biological yield (191.13g) with mean 79.00g. The genotype Pusa Jagannath had maximum harvest index (30.98%) with mean value 23.87%. The oil content in mustard maximum in 42.00 % were recorded in Pusa Agrani with mean oil content was 39.16 percent. The genotype Pusa Mustard-21 showed highest seed yield per plant (47.00g) with a mean seed yield of 18.58. The higher heritability estimates in broad sense for biological yield per plant (99.6%), number of primary branches per plant (91.4%), number of secondary branches per plant (98.4) plant height (99.2%), 1000-seed weight (99.4%) and days to 50 per cent flowering (98.5). Expected genetic advance at 5% selection intensity was recorded higher for biological yield per plant (71.60) and number secondary branches per plant (10.87).

Download Full-text

Combining Ability and Gene Action Analysis for Seed Yield and Component Traits in F2 Generation of Vigna mungo L. Hepper by using Griffing Approach

Legume Research - An International Journal ◽

10.18805/lr-4336 ◽

2020 ◽

Author(s):

Amandeep Singh ◽

R. K. Mittal ◽

V. K. Sood ◽

Kulveer Singh Dhillon ◽

Shailja Sharma

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Gene Action ◽

Block Design ◽

Crop Improvement ◽

Gene Effects ◽

Early Maturity ◽

Plant Seed ◽

Combining Abilities ◽

Half Diallel

Background: Urdbean (2n=2x=22), also known as blackgram is an important short duration legume crop belonging to family Fabaceae, widely cultivated in Asia. Urdbean occupies an important position among pulses owing to its high seed protein (25-26%), carbohydrates (60%), fat (15%), minerals, amino acids and vitamins. Owing to its low water requirement, it is also suitable for rainfed conditions. It adapts well to various cropping systems owing to its ability to fix atmospheric nitrogen in symbiosis with soil bacteria, rapid growth and early maturity. Half diallel analysis was adopted in present study to gather information on gca (general combining abilities) and sca (specific combining abilities) of 6 diverse parents and simultaneously estimating various types of gene effects involved in the expression of seed yield and related attributes in urdbean. Methods: The F1’s were developed during 2017 in 9 x 9 half diallel fashion by Sharma et al. 2019 and these F1’s were evaluated. Significant crosses on the basis of gene action and combining ability were selected for further advancement. The experimental material comprised of the six parents and 15 F2’s of a 6 x 6 half diallel cross among six cultivars of urdbean (four are purelines viz., Palampur-93, HPBU-111, DU-1 and KU-553 and rest of the two are advanced and indigenous lines viz., Him Mash-1 and IC-281994). The F2’s along with the parental genotypes were grown in a Randomized block Design (RBD) with three replications at Experimental Farm of the Department of Crop Improvement, COA, CSK HPKV Palampur (H.P.) during Kharif, 2018. Results: The cross combination, Him Mash-1× HPBU-111, was identified the best for high seed yield on the basis of sca. The specific crosses, Palampur-93 × IC-281994, Palampur-93 × KU-553 were good specific combiners for most of the traits viz., plant height, branches per plant, pods per plant, biological yield per plant, seed yield per plant, harvest index, 100-seed weight and crude protein content.

Download Full-text

Heterobeltiosis and interrelationship of some of important quantitative traits in oilseed rape genotypes

Open Agriculture ◽

10.1515/opag-2019-0059 ◽

2019 ◽

Vol 4 (1) ◽

pp. 591-598

Author(s):

Valiollah Rameeh

Keyword(s):

Plant Height ◽

Oilseed Rape ◽

Seed Yield ◽

Seed Weight ◽

Selection Criterion ◽

Yield Component ◽

Genetic Effects ◽

Narrow Sense Heritability ◽

Additive Genetic Effects ◽

Half Diallel

AbstractHalf diallel crosses of eight spring genotypes of oilseed rape (Brassica napus L.) were considered to evaluate heterobeltiosis effects of plant height, yield component characters, seed yield and harvest index. Significant mean squares of general and specific combining abilities (GCA and SCA) were determined for all the traits except 1000-seed weight demonstrating prominence of additive and non additive genetic effects for the mentioned traits. Narrow-sense heritability estimates were high for siliquae on main raceme and 1000-seed weight representing the major importance of additive genetic effects for the characters. Most of the crosses with significant positive high parent heterosis for seed yield had also significant heterotic effects for siliquae per plant; therefore, this trait can be considered as indirect selection criterion for enhancing seed yield. Seed yield was significantly correlated with the traits including plant height, siliquae on main raceme and siliquae per plant based on mean performances of the traits and this result was confirmed with correlations based on heterobeltiosis. The crosses including L41×LF2 and L31×L401 with highly significant heterobeltiosis estimates of grain yield were superior combinations for breeding this trait. which proved good specific combiners for most of the traits.

Download Full-text