Genetic variability, heritability and genetic advance studies for different characters on green fodder yield in oat (Avena sativa L.)

2016 ◽  
Vol 36 (2) ◽  
Author(s):  
Harinarayan Bind ◽  
Baudh Bharti ◽  
M. K. Pandey ◽  
Sanjeev Kumar ◽  
Vishwanath ◽  
...  
Keyword(s):  
Avena Sativa ◽  
Harvest Index ◽  
Dry Matter ◽  
Quantitative Traits ◽  
Genetic Advance ◽  
Gene Effects ◽  
Effective Selection ◽  
Green Fodder ◽  
Fodder Yield ◽  
Additive Gene

The experimental material for present study consisted of 30 diverse genotypes of oat. Observation were recorded on 11 quantitative traits in oat. High estimates of heritability (broad sense) were obtained for all the characters. The magnitude of PCV as expected was greater than the corresponding GCV for all the characters indicating importance of environment in expression of characters On the basis of result Out of 11 characters studied seeds per panicle, dry matter yield per plant, green fodder yield per plant and harvest index showed high GCV and heritability coupled with high genetic advance as percent of mean which revealed that these four traits might be under control of additive gene effects and therefore they are more reliable for effective selection.

scholarly journals Genetic study for epistatic gene effects for major yield contributing traits against drought in rice

2019 ◽  
Vol 11 (4) ◽  
pp. 755-761
Author(s):  
A.K. Singh ◽  
A.K. Mall ◽  
P.K. Singh
Keyword(s):  
Harvest Index ◽  
Quantitative Traits ◽  
Genetic Parameters ◽  
Gene Effects ◽  
Epistatic Interactions ◽  
Partial Dominance ◽  
Selection Procedures ◽  
Spikelets Per Panicle ◽  
Additive Gene ◽  
Population Improvement

The study subjected to estimate gene effects and inheritance of quantitative traits of rice with Generation Mean Analysis (GMA). Segregation analysis and estimation of genetic parameters under epistatic model indicated partial dominance and importance of additive effects in the inheritance of drought tolerance, respectively. In present study, absence of epistasis by scaling tests was recorded only for plant height in cross NDR-359 x P0 1564, grains per panicle in cross DSL- 63-8 x NDR- 359, test weight in cross Sarjoo-52 x P0 359, harvest-index in cross NDR-359 x P0 1564 and spikelets per panicle in cross Sarjoo-52 x P0 359 and NDR-359 x P0 1564 in irrigated condition and days to 50 per cent flowering in cross P0 359 x Sonam and harvest-index in cross NDR-359 x P0 1564 in drought condition. In remaining cases, existence of epistasis was observed in either one or both conditions by one or both types of scaling tests. The presence of complementary epistasis in cross P0 359 x Sonam and P0 1564 x Sarjoo-52 would make progress through selection procedures exploiting additive gene actions faster while existence of duplicate epistasis in cross NDR-359 x P0 1564 would have reverse impact. The non-additive gene effects in NDR-359 x P0 1564 for grain yield plant-1may also be utilized for facilitating development of pureline cultivars by involving population improvement methods. Our study concluded that for a large number of traits in six crosses, dominance gene effects and epistatic interactions were significant under drought and irrigated conditions implying that utilization of heterosis through hybrid varieties will act as a budding choice.

scholarly journals Genetic Variability and Association Analysis of Oat (Avena sativa L.) Genotypes for Green Forage Yield and Other Components

2020 ◽  
pp. 133-141
Author(s):  
Mayuri Sahu ◽  
Ajay Tiwari
Keyword(s):  
Genetic Variability ◽  
Association Analysis ◽  
Avena Sativa ◽  
Dry Matter ◽  
Forage Yield ◽  
Direct Selection ◽  
Dry Matter Yield ◽  
Green Fodder ◽  
Fodder Yield ◽  
Positive Direct

Fourteen genotypes of fodder oat (Avena sativa L.) were evaluated to assess the genetic variability and association analysis during Rabi 2018-19. The character dry matter yield (q/ha/day) had the highest heritability. GCV and PCV estimate was recorded for the days to 50% flowering. Highest genetic advance was observed for green forage yield (q/ha) were as high as percentage of mean was observed for dry matter yield (q/ha/day). In the present experiment, it is evident for the result that day to 50% flowering has a highly significant negative correlation with green forage yield. The highest positive direct effect contributing to green forage yield (q/ha) was due to low crude protein (q/ha). However indirect effect on improvement in green fodder yield was exerted by most of the traits studied. A direct selection for all these traits will help in the improvement of green fodder yield. Green fodder yield was positively correlated with most of the traits studied except days to 50% flowering and plant height (cm). The study provided the opportunity to identify suitable genotypes to be used in a future breeding programme.

scholarly journals Effect of Foliar Sprays of Sulfuric Acid and Thiourea on Herbage and Seed Yield in Berseem (Trifolium Alexandrinum L.)

2019 ◽  
Author(s):  
Balwinder Kumar ◽  
R S Sarlach
Keyword(s):  
Low Temperature ◽  
Seed Yield ◽  
Harvest Index ◽  
Crude Protein ◽  
Dry Matter ◽  
Pure Stand ◽  
Trifolium Alexandrinum ◽  
Foliar Sprays ◽  
Green Fodder ◽  
Fodder Yield

An abiotic stress such as low temperature or frost poses serious challenge for proper growth and development of the crop. The study was carried out for two consecutive years to investigate the effect of mixed cropping (berseem + oat vs pure berseem) and two bio-regulators (H2SO4 and Thiourea) applied at different concentrations (0.05 and 0.1%) during low temperature conditions on growth, fodder yield and seed yield of berseem. Berseem + oat cropping recorded significantly higher green fodder yield, dry matter yield and crude protein yield by 7.0%, 6.1 % and 3.4% respectively over pure stand. Bio-regulators sprays viz. H2SO4 and Thiourea after first cut recorded 5.2-11.2% increase in green fodder yield. Berseem seed yield and harvest index were significantly superior in pure stand than intercrops. An increase of 21.4% in berseem seed yield was recorded with foliar sprays of 0.05% TU over control.

Assessment of Genetic Variability and Relationship between Different Quantitative Traits in Field Pea (Pisum sativum var. arvense) Germplasm

2021 ◽  
Author(s):  
Vijay Pratap ◽  
Vijay Sharma ◽  
Kamaluddin . ◽  
Gaurav Shukla
Keyword(s):  
Genetic Variability ◽  
Correlation Coefficient ◽  
Seed Yield ◽  
Harvest Index ◽  
Quantitative Traits ◽  
Field Pea ◽  
Path Coefficient ◽  
Genetic Advance ◽  
Path Coefficient Analysis ◽  
Biological Yield

Background: Assessment of genetic variability and inter-relationship between the characters can be used in the breeding programme to evolve new varieties with wide genetic diversity to maximize the yield potential in crop improvement programmes. Eighty-four field pea genotypes were evaluated in an augmented block design for thirteen quantitative traits to study variance components, heritability, genetic advance and inter-relationship between the yield and yield contributing traits. Methods: The extent of phenotypic and genotypic variation that exist in a character was calculated by the formula suggested by Burton and de Vane (1953). Heritability in broad sense and genetic advance as per cent of mean for each character was computed using the formula suggested by Hanson et al. (1956) and Johnson et al. (1955), respectively. Correlation coefficient was calculated by method suggested by Searle (1961) and path coefficient analysis done as per method of Wright (1921) and elaborated by Dewey and Lu (1959).Result: Significant differences observed among the genotypes tested for the yield characters indicated the presence of variability. High heritability coupled with high genetic advance as percent of mean was observed for the traits viz., plant height, effective pods plant-1, harvest index and seed yield plant-1 were governed by additive gene effects which will aid in effective selection. Correlation coefficient analysis revealed that seed yield plant-1 had highly significant and positive correlation with biological yield plant-1, effective pods plant-1, harvest index, seeds pods-1 and effective nodes plant-1, indicating that these traits are strongly associated with seed yield in field pea. Path coefficient analysis identified biological yield plant-1 followed by harvest index, seed pod-1, effective nodes plant-1, 100-seed weight and day to 50% flowering as highly desirable components with great direct effects on seed yield. 

Association among genetic parameters in Indian mustard (Brassica juncea L. Czern and Coss.)

2018 ◽  
Vol 3 (01) ◽  
pp. 11-15
Author(s):  
Vipin Kumar Malik ◽  
Shiv Kumar Singh ◽  
Vijay Kumar ◽  
Norang Pal Singh ◽  
Ankit Malik ◽  
...  
Keyword(s):  
Brassica Juncea ◽  
Seed Yield ◽  
Seed Weight ◽  
Harvest Index ◽  
Indian Mustard ◽  
Flowering Plant ◽  
Genetic Advance ◽  
Gene Effects ◽  
Plant Seed ◽  
Biological Yield

The considerable amount of genetic variability on the basis of GCV and PCV estimates for the traits; days to 50% flowering, numbers of primary and secondary branches per plant, length of siliqua, 1000-seed weight, seed yield per plant, biological yield per plant and harvest index were found in thirty five genotypes of Indian mustard (Brassica juncea L. Czern and Coss). Heritability and genetic advance were higher for days to 50% flowering, plant height and biological yield per plant. Although, number of secondary branches per plant, seed yield per plant and harvest index had moderately high heritability with moderate genetic advance indicating additive gene effects and selection pressure could be applied on them for yield improvement leads to fast genetic improvement of the materials. Days to 75% maturity, length of siliqua, 1000-seed weight and oil content had low heritability indicating that these traits were under the influence of environmental factors and selection on the basis of these traits could not be effective.

scholarly journals Effect of Nitrogen Levels on Forage Yield and Quality of Multi Cuts Oat Cultivars

2021 ◽  
pp. 9-13
Author(s):  
H. K. Patel ◽  
P. H. Rathod ◽  
D. R. Padheriya
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Levels ◽  
Yield And Quality ◽  
Green Fodder ◽  
Fodder Yield ◽  
Oat Cultivars ◽  
Average Plant ◽  
Average Plant Height

A field experiment was conducted at Main Forage Research Station, Anand Agricultural University, Anand during rabi-2019-20 to study the effect of nitrogen levels on yield and quality of multi cut oat cultivars with aim to find out nitrogen levels on green fodder yield and quality of oat. There were total four varieties (V1: OL 1874, V2: JO-05-304, V3: UPO 212 and V4: RO 19) and four levels of nitrogen (N1: 35 kg N/ha, N2: 70 kg N/ha, N3: 105 kg N/ha and N4: 140 kg N/ha) was tested. Experiment was laid out in split plot design with three replications. Experiments results revealed that significantly the highest green fodder yield was reported in RO 19 (V4) treatment, while average plant height and average number of tiller per meter row length were reported in V1: OL 1874 and V2: JO 05-304 treatment, respectively. Average plant height, Green fodder yield, average dry matter, average crude protein, total crude protein yield and dry matter yield were found highest by application of 140 kg N/ha. Average tiller per meter row length was higher in N4 (140 kg N/ha) and average dry matter was higher in N1 (35 kg N/ha). Response of nitrogen non-significant in case of average ADF and NDF content.

scholarly journals 152 GENETIC ANALYSIS OF CUCUMBER QUANTITATIVE TRAITS IN THE PARENTS AND THEIR F1 DIALLEL ANALYSIS

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 450e-450
Author(s):  
Seif H. Gad El-Hak ◽  
Saved. H. Mahmoud ◽  
Mohamed A.. Abobakr ◽  
Ragab M. Alv
Keyword(s):  
Genetic Analysis ◽  
Plant Height ◽  
Quantitative Traits ◽  
Diallel Analysis ◽  
Gene Effects ◽  
Diallel Crosses ◽  
Additive Gene Effects ◽  
Additive Gene ◽  
Cucumber Yield

Five lines of cucumber and their 10 F1 diallel crosses were statistically and graphically analyzed to evaluate their performance for eight quantitative traits. Additive and non-additive gene effects were involved in the inheritance of all traits. The variances due ro GCA and SCA effects were highly significant for all traits, but the GCA effect was much greater than SCA except In the case of plant height. The cucumber “TMG-1” and “Yomaki” genotypes were superior for GCA as well as SCA for early and total yields per plant, respectively. Therefore, they can be involved in hybrid programs improvement for cucumber yield under similar conditions.

scholarly journals Genetic variability, correlation, path analysis and construction of selection index in mulberry silkworm, Bombyx mori L. I. Genetic variability

2012 ◽  
Vol 30 ◽  
pp. 33-36
Author(s):  
Md Ariful Hasan ◽  
Sawdagar Mahfuzar Rahman ◽  
Md Kamrul Ahsan
Keyword(s):  
Genetic Variability ◽  
Selection Index ◽  
Genetic Advance ◽  
Filament Length ◽  
Egg Hatching ◽  
Shell Weight ◽  
Gene Effects ◽  
Additive Gene ◽  
High Heritability ◽  
Mulberry Silkworm

The genotypic variability and heritability for nine quantitative characters in 65 varieties of silkworm, B. mori L. have been investigated. Variation among genotypes were highly significant (p<0.001) for all the characters indicating the existence of a real difference among the genotypes which are suitable for breeding purposes. The highest heritability was obtained for shell weight followed by filament size (FS), filament length (FL), expected cocoon yield out of 100 dfls (ECY), surviving percentage of larvae (SPL), cocoon weight (CW), egg hatching percentage (EHP) and mature larval weight (MLW). Comparatively high heritability accompanied by a genetic advance was recorded for FL and total number of eggs laid per female (TEL) indicating the importance of additive gene effects of these characters, but shell weight, cocoon weight and filament size showed high heritability and low genetic advance indicating the involvement of non-additive gene systems in the inheritance of these characters. So selection on the basis of these characters, with relatively more emphasis upon filament length and total number of eggs laid per female to obtain high yielding varieties of B. mori is suggested. DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10744 Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp.33-36

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