Genetic studies in mungbean [Vigna radiata (L.) Wilczek]

2018 ◽  
Author(s):  
P. Khajudparn ◽  
O. Poolsawat ◽  
P.A. Tantasawat
Keyword(s):  
Root Length ◽  
Seed Weight ◽  
Root Length Density ◽  
Gene Effects ◽  
Plant Seed ◽  
Additive Gene ◽  
Pod Length ◽  
Weight Number ◽  
Number Of Seeds ◽  
Physiological Characters

To study the genetics of seven agronomic and physiological characters (total dry matter (TDM), number of pods per plant, seed weight per plant, 100-seed weight, number of seeds per pod, pod length and root length density) which were correlated with yield, eight crosses of mungbean were made, and the agronomic and physiological characters were evaluated in the six basic generations (P1, P2, F1, F2, BC1 and BC2) of each cross. It was found that most characters including TDM, number of pods per plant, seed weight per plant and root length density showed additive, dominance and epistatic gene effects, except for 100-seed weight, number of seeds per pod and pod length. One hundred-seed weight and number of seeds per pod possessed only additive gene effects, while pod length was controlled by both additive and dominance gene effects. The duplicate epistasis revealed the presence of a large number of non-additive gene actions controlling TDM, number of pods per plant, seed weight per plant and root length density that may hinder the improvement of these characters, and confirmed that selection of these characters in later generations would be more feasible.

scholarly journals Inheritance of Pod Length and Other Yield Components in Two Cowpea and Yard-Long Bean Crosses

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 682
Author(s):  
Victoria E. Edematie ◽  
Christian Fatokun ◽  
Ousmane Boukar ◽  
Victor O. Adetimirin ◽  
P. Lava Kumar
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Model Fitting ◽  
Generation Mean Analysis ◽  
Gene Effects ◽  
Additive Gene ◽  
Cowpea Seed ◽  
Selection For ◽  
Pod Length ◽  
Number Of Seeds

This study determined the gene effects involved in the inheritance of pod length and other yield-related traits and relationships among traits in crosses between two cowpea lines (TVu 2280 and TVu 2027) and a yard-long bean (TVu 6642) line with long pods. Plants of six generations (P1, P2, F1, F2, BC1P1, and BC1P2) derived from TVu 2280 × TVu 6642 and TVu 2027 × TVu 6642 were evaluated under field conditions. Data collected on 14 yield components of each cross were used for generation mean analysis. Gene effects and their magnitudes varied with the crosses; digenic epistatic gene effects were detected for 10 traits in TVu 2280 × TVu 6642 and 11 traits in TVu 2280 × TVu 6642. Only additive gene effect was significant for pod length in TVu 2280 × TVu 6642 while additive, dominant, and two of the three digenic epistatic gene effects were significant in TVu 2027 × TVu 6642. Models that incorporated only significant additive, dominant, and digenic epistasis were adequate for all 14 traits in TVu 2280 × TVu 6642 and eight of the 12 traits in TVu 2027 × TVu 6642 for which model-fitting was possible. Across segregating generation of the two crosses, pod length (PodLNT) was significantly (p < 0.001) correlated with three major yield components viz. pod weight (0.84, 0.77), number of seeds per pod (0.41, 0.30) and seed weight per pod (0.61, 0.29). Significant correlation of PodLNT with seed yield per plant was moderate and significant (p < 0.01–0.001) in the BC1P1 of the two crosses (0.31 and 0.41). An improvement in cowpea seed yield is feasible through selection for long pods in segregating generations involving crosses with yard-long bean.

STUDY OF EFFECT OF EMS, MMS AND GR ON YIELD CONTRIBUTING TRAITS IN URDBEAN, VIGNA MUNGO

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
A. B. SAGADE
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Inhibitory Effect ◽  
Individual Plant ◽  
Mean Values ◽  
Methane Sulphonate ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

The study of the effect of three well known mutagens, ethyl methane sulphonate (EMS), methyl methane sulphonate (MMS) and gamma rays (GR) on the yield contributing traits of the urdbean variety TPU-4 were carried out in the M3 generation. Effect of selected mutagenic treatments/doses of EMS (0.02, 0.03 and 0.04 M), MMS (0.0025, 0.05 and 0.01 M) and (GR) (30, 40 and 50 KR) on different yield contributing traits like plant height, plant spread, number of pods per plant, pod length, number of seeds per pod, seed yield per plant and 100 seed weight were analyzed in the M3 populations of the variety TPU-4. Seeds of M2 plants and control were harvested separately and sown to raise M3 population.. Genetic variabilty in the mutagen administered M3 progeny of the urdbean variety TPU-4 was analyzed by employing statistical methods. Data on mean values and shift in the mean of seven quantitative traits was evaluated on individual plant basis. The experimental findings revealed that concentrations / dose of the all these mutagens showed inhibitory effect on plant height, number of pods per plant, pod length and number of seeds per pod. Lower concentrations of mutagens exerted a promotory effect on plant spread, 100 seed weight and seed yield per plant while higher concentrations of these mutagens inhibited them to different extent.

GENE EFFECTS IN CORN (ZEA MAYS L.): III. RELATIVE STABILITY OF THE GENE EFFECTS IN DIFFERENT ENVIRONMENTS

1962 ◽  
Vol 42 (4) ◽  
pp. 628-634 ◽  
Author(s):  
Edwin E. Gamble
Keyword(s):  
Zea Mays ◽  
Relative Stability ◽  
Seed Weight ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Minor Importance ◽  
Gene Effects ◽  
Population Means ◽  
Additive Gene ◽  
The Cross

Six inbred lines of corn and their F1’s, F2’s, and backcrosses were tested at two locations in each of 2 years. The population means obtained were used to estimate additive, dominance, additive × additive, additive × dominance, and dominance × dominance gene effects for six quantitative attributes.Variance components of cross × environment interactions indicated the presence of major interactions of gene effects with environments. The cross × year interactions were of major importance but the cross × location interactions were of minor importance. Additive gene effects appeared to be the most constant over environments followed by additive × dominance gene effects. The remaining types of gene effects indicated very little stability over environments for most of the attributes studied. Estimates of gene effects were most constant over environments for ear diameter in corn while yield, plant height, and seed weight showed little or no stability of the estimates of the gene effects.

scholarly journals Heterosis and gene action in okra

2008 ◽  
Vol 32 (3) ◽  
pp. 421-432 ◽  
Author(s):  
Nandan Mehta ◽  
BS Asati ◽  
SR Mamidwar
Keyword(s):  
Plant Height ◽  
Seed Weight ◽  
Gene Action ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Additive Gene Action ◽  
Fruit Length ◽  
Additive Gene ◽  
100 Seed Weight ◽  
Number Of Seeds

Forty two hybrids generated by crossing three testers with fourteen lines were studied along with parents for studying heterosis and gene action for days to first flowering, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit, 100-seed weight and fruit yield per plant during rainy season and summer season of 2002-03 at Department of Horticulture, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India. The most heterotic combinations were VRO-6 x Parbhani Kranti, VRO-4 x Parbhani Kranti, Daftari-1 x Arka Abhaya and Kaveri Selection x Ankur Abhaya for fruit yield per ptant. The sca variances for days to fruit flower, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit and 100-seed weight were higher than so gca variance so there is a preponderance of non-additive gene action. The gca variances was greater than sca variances for fruit yield per plant indicating preponderance of additive gene action for this trait. Overall, the results discussed above are quite indicative of the fact that hybrid okra has great potentialities of maximizing fruit yield in Chhattisgarh plains.DOI: http://dx.doi.org/10.3329/bjar.v32i3.544Bangladesh J. Agril. Res. 32(3) : 421-432, September 2007

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.

Genetic Divergence Analysis in Mungbean (Vigna radiata L. Wilczek)

2019 ◽  
Vol 4 (01) ◽  
pp. 106-109
Author(s):  
Amit Tomar ◽  
D. K. Upadhyay
Keyword(s):  
Seed Weight ◽  
Block Design ◽  
Number Of Clusters ◽  
Randomized Block Design ◽  
Days To Maturity ◽  
Cluster Distance ◽  
Farm Crop ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

An experiment involving 45 genotypes/strains of mungbean was conducted during kharif 2018 at University Farm (Crop Cafeteria) of Rani Lakshmi Bai Central Agricultural University (RLBCAU), Jhansi in a Randomized Block Design with three replications. Data were recorded and analyzed for 10 characters viz.; days to 50% flowering, days to maturity, plant height (cm), number of primary branches per plant, number of clusters per plant, number of pods per plant, pod length (cm), number of seeds per pod, 100-seed weight (g) and grain yield per plant (g). All the forty five genotypes were grouped into seven different clusters using D2 statistics. Cluster-I, II, III, IV, V, VI and VII had 8, 5, 4, 5, 13, 2 and 8 genotypes, respectively. The greatest inter cluster distance (297.39) was between cluster-II and cluster-V.

Analysis of gene effects governing yield and yield traits in pigeonpea (Cajanus cajan L.)

2016 ◽  
Vol 50 (3) ◽  
Author(s):  
R. S. Singh ◽  
M. N. Singh
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Cajanus Cajan ◽  
Dominant Gene ◽  
Gene Effects ◽  
Relative Contribution ◽  
Main Gene ◽  
Additive Gene ◽  
Almost All ◽  
Pod Length

The six generations (P<sub>1</sub>, P<sub>2</sub>, F<sub>1</sub>, F<sub>2</sub>, BC<sub>1</sub> and BC<sub>2</sub>) of twelve cross combinations of pigeonpea (<italic>Cajanus cajan</italic> L.) were studied during 2003-2006 for days to 50 % flowering, days to maturity, plant height, number of primary branches, number of secondary branches, pods per plant, pod length, number of seeds per pod, 100-seed weight, harvest index and seed yield per plant. The means of six generations were subjected to detect main gene effects and interactions. The estimates of six parameter model revealed that both additive and dominant gene effects were important in all the crosses for almost all the traits. However, the relative contribution of dominant gene effects was much higher than additive gene effects for plant height, pods per plant and seed yield per plant. Higher frequency of duplicate type of epistasis also confirms the prevalence of dominance gene effects for above traits except for seed yield per plant.

scholarly journals Effects of Phosphorus Fertilization on Hybrid Varieties of mungbean [Vigna radiata (L.) Wilczek] in a Salinity Prone Area of the Subtropics

2020 ◽  
Vol 73 (3) ◽  
Author(s):  
Mst. Nusrat Jahan ◽  
Sushama Barua ◽  
Hasan Ali ◽  
Md. Noyon Ali ◽  
Md. Sazzad Hossain Chowdhury ◽  
...  
Keyword(s):  
Seed Weight ◽  
Block Design ◽  
Interactive Effect ◽  
Growth Yield ◽  
Phosphorus Fertilization ◽  
Yield Attributes ◽  
Number Of Leaves ◽  
Pod Length ◽  
Number Of Seeds ◽  
Number Of Branches

A field experiment was conducted comprising two varieties of mungbean, BARI Mung-5 (V1) and BARI Mung-6 (V2), and five levels of phosphorus fertilizer: triple super phosphate [Ca(H<sub>2</sub>PO<sub>4</sub>)] viz. T1 (control), T2 (42.5 kg P ha<sup>−1</sup>), T3 (85 kg P ha<sup>−1</sup>), T4 (127.5 kg P ha<sup>−1</sup>), and T5 (170 kg P ha<sup>−1</sup>). The experiment was organized in a randomized complete block design with three replications. V1 produced the highest number of pods per plant (7.65), whereas the maximum 1,000-seed weight (49 g) was produced by V2. The maximum plant height (30.89 cm), number of branches per plant (8.55), number of leaves per plant (19.05), number of pods per plant (10.25), pod length (8.95 cm), number of seeds per pod (9.11), 1,000-seed weight (48.17 g), and yield (1.05 t ha<sup>−1</sup>) were obtained from the T4 treatment. The interaction of phosphorus levels and varieties had a considerable effect on the growth, yield, and yield attributes of mungbean. The highest number of leaves (20.44) and number of pods (10.39) were obtained from V1 when 127.5 kg P ha<sup>−1</sup> (T4) was applied, whereas the maximum number of seeds per pod (9.25) and maximum pod length (9.09 cm) were obtained when  85 kg P ha<sup>−1</sup> and 42.5 kg P ha<sup>−1</sup>, respectively, were used. The highest number of branches per plant (8.87), 1,000-seed weight (52.83 g), and the maximum seed yield (1.14 t ha<sup>−1</sup>) were achieved from the treatment V2T4 owing to the interactive effect of phosphorus dose and mungbean variety.

scholarly journals The GT biplot analysis of green bean traits

2018 ◽  
Vol 48 (6) ◽  
Author(s):  
Tâmara Rebecca Albuquerque de Oliveira ◽  
Geraldo de Amaral Gravina ◽  
Gustavo Hugo Ferreira de Oliveira ◽  
Kleberson Cordeiro Araújo ◽  
Lanusse Cordeiro de Araújo ◽  
...  
Keyword(s):  
Grain Yield ◽  
Analysis Of Variance ◽  
Seed Weight ◽  
Block Design ◽  
Principal Component ◽  
Green Bean ◽  
Plant Seed ◽  
Pod Yield ◽  
Biplot Analysis ◽  
Number Of Seeds

ABSTRACT: The green bean (Phaseolus vulgaris L.) is a nutrient-rich vegetable much appreciated; although, little studied, in Brazil. The aim of the current study was to investigate the nature of traits of interest, as well as to select plants for the green bean breeding program based on genotype vs. trait biplot analysis. The experiment followed a randomized block design, with 4 repetitions and 17 genotypes. Analysis of variance, principal component analysis and biplot charts were performed to analyze the number of pods per plant, the number of seeds per pod, the number of seeds per plant, seed weight per plant, 100-seed weight, as well as grain and pod yields. The analysis of variance showed genetic variability between genotypes. Grain yield, pod yield and seed weight per plant were highly correlated. The number of seeds per pod was negatively correlated with pod weight, grain weight and with seed weight per plant. Lines Feltrin and UENF 14-30-3 were indicated to increase gains in variables such as grain yield and pod yield.

Combined effects of disease and competition on plant fitness

2000 ◽  
Vol 78 (5) ◽  
pp. 646-654
Author(s):  
Johanne Brunet ◽  
Christopher Mundt
Keyword(s):  
Seed Weight ◽  
Puccinia Striiformis ◽  
The Other ◽  
Plant Fitness ◽  
Combined Effects ◽  
Fitness Measures ◽  
Intergenotypic Competition ◽  
The Impact ◽  
Weight Number ◽  
Number Of Seeds

Wheat genotypes susceptible to different races of a pathogen, Puccinia striiformis, were planted in pure stands and in three different 1:1 mixtures, in both the presence and absence of disease, in two sites, and over 3 years. Using analyses of variance, we tested whether disease and intergenotypic competition influenced a genotype's fitness and whether significant interactions existed between the effects of disease and competition on genotype fitness. Seed weight, number of inflorescences per seed planted, seeds per inflorescence, and absolute fitness were estimated for each genotype in each treatment. Absolute fitness was determined as the number of seeds collected per seed planted. Disease reduced seed weight. The other fitness measures were influenced by either disease or competition, and the impact of each factor often varied among site-year combinations. In general, interactions between the effects of disease and competition on genotype fitness were not significant. The few significant interactions indicated a less than additive effect of competition and disease on genotype fitness. The overall lack of interaction may be, in part, due to lesser disease levels in mixed as compared with pure stands, or reduced level of competition under diseased conditions.Key words: pathogens, competition, plant fitness, stripe rust, wheat.

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