scholarly journals Variability and heritability analysis in spring wheat (Triricum aestivum L .) Genotypes

2015 ◽  
Vol 40 (3) ◽  
pp. 435-450
Author(s):  
MF Amin ◽  
M Hasan ◽  
NCD Barma ◽  
MM Rahman ◽  
MM Hasan
Keyword(s):  
Agricultural Research ◽  
Grain Filling ◽  
Morphological Characters ◽  
Research Centre ◽  
Genetic Advance ◽  
Grain Filling Rate ◽  
G 38 ◽  
High Heritability ◽  
G 11 ◽  
Wheat Lines

The experiment was carried out with 50 wheat lines to study their intergenotypic variability, heritability, GCV, PCV, genetic advance, and CV percent considering 14 morphological characters at the experimental field of Regional Wheat Research Centre RWRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during November 2010 to March 2010. Significant variation was observed among the genotypes for all characters studied. High GCV and PCV values were observed for grain filling duration, grain filling rate, and seed yield. High heritability along with higher genetic advance was observed for DTH, DTA, DPM, GFD, GFR, PHT, CHLA, spikelets/spk., and yield kg/ha. The remaining traits showed lower heritability coupled with low genetic advance in percent of mean. Considering variability among the genotypes, heritability, genetic advance, percent co-efficient of variation, and field performances, the genotypes G 3, G 10, G 11, G 12, G13, G 21, G 29, G 35, G 38, G 40, G 46 and G 48 were found suitable for future breeding programme.Bangladesh J. Agril. Res. 40(3): 435-450, September 2015

scholarly journals ESTIMATION OF SOME GENETIC PARAMETERS FOR EARLINESS AND SOME VEGETATIVE TRAITS IN SOME HULLESS BARLEY GENOTYPES UNDER NORMAL AND WATER STRESS CONDITIONS

2015 ◽  
Vol 2 (2) ◽  
pp. 117-132
Author(s):  
Maamoun Ahmed Abdel-Moneam ◽  
Sally E El-Wakeel ◽  
M. S. Sultan ◽  
A. A. Eid
Keyword(s):  
Water Stress ◽  
Normal Condition ◽  
Grain Filling ◽  
Total Chlorophyll ◽  
Genetic Advance ◽  
Filling Rate ◽  
Grain Filling Rate ◽  
Days To Heading ◽  
Grain Filling Period ◽  
Combined Data

This investigation was carried out at Sakha Agricultural Research Station, ARC, Egypt during the two growing seasons (2010/2011 and 2011/2012). Seven lines and three testers were used to develop barley hybrids for earliness and vegetative traits under normal and water stress conditions. Data revealed that most of the variances due to genotypes, parents, crosses, parents x crosses, lines, testers and line x testers were highly significant for most studied traits under both conditions and their combined data. The water stress treatment decreased the mean of days to heading for parents and their hybrids. The parental Line-1, Tester-1 under all conditions and top cross no. 7 under normal and combined and cross no. 1 under stress were the earliest parents and crosses for days to heading. The stressed genotypes for water, matured earlier than genotypes grown under normal condition. The ratios of GCA/SCA were lesser than unity for all studied traits under all conditions, which mean that non-additive gene effects played an important role in the inheritance of these traits. In such cases, a bulk method would be fruitful to eliminate the effect of dominance in the advanced generation. Desirable significant GCA effects were showed by Line-1 under water stress and Tester-1 under all conditions for days to heading; Tester-1 under normal and combined for days to maturity; Line-2 under stress and Line-7 under normal condition for grain filling period; Line-4, Line-6 under both conditions and combined, Line-3 under normal, Line-7 under water stress, Tester-3 under both conditions and combined data for grain filling rate; Line-4 under both conditions and their combined data, Line-7 under water stress and combined data, Tester-2 under stress and combined data for flag leaf area; and Line-3 under normal, Line-2 and Line-7 under water stress for total chlorophyll content. Moderate phenotypic and genotypic coefficients of variability were obtained for grain filling rate and total chlorophyll content, and high for flag leaf area. Small differences between genotypic and phenotypic coefficients of variability were found for all studied traits under all conditions, indicating the presence of sufficient genetic variability for these traits, which may facilitate selection. Broad sense heritability percentages ranged from moderate to high with percentages ranged from 10.82% for days to maturity at combined data to 97.30% for grain filling rate under normal condition. These results indicate that genotypic variances played the major part of phenotypic variances. Narrow sense heritability percentages varied from low to moderate with percentages ranged from 0.92 % for grain filling period at combined data to 18.92% for grain filling rate under normal condition. The expected genetic advance (Δg) ranged from 0.02 for grain filling period at combined data to 0.36 for total chlorophyll conten under normal condition. While, the estimates of predicted genetic advance (Δg %) ranged from 0.04% for grain filling period at combined data to 7.41% for grain filling rate under stress condition. Generally, traits that showed high values of narrow sense heritability and expected genetic advance from selection should be used in breeding program where selection in the early segregating generations will be useful because additive gene action is more important than non-additive genetic components.

scholarly journals Selection of Genotypes and Contributing Characters to Improve Seed Cotton Yield of Upland Cotton (Gossypium hirsutum L.)

2020 ◽  
pp. 31-41
Author(s):  
M. M. A. Ali ◽  
S. Kundu ◽  
M. F. Alam ◽  
B. K. Biswas ◽  
M. Hasanuzzaman
Keyword(s):  
Correlation Coefficient ◽  
Upland Cotton ◽  
Main Stem ◽  
Research Centre ◽  
Genetic Advance ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
High Heritability

The experiment was conducted at Cotton Research Centre, Chowgacha, Jessore during 2015-2016 with twenty genetically diverged genotypes, with a view to select desirable genotypes and important characters enhancing seed cotton yield in upland cotton. The experiment was laid out in RCBD with three replications. The unit plot size was 4.5 m x 4.5 m and the spacing, 45 cm ×90 cm. Data were recorded from randomly selected ten plants on monopodial branches plant-1, primary sympodial branches plant-1,secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st (5%) flowering, days to 1st boll splitting, bolls plant-1, single boll weight (g), unburst bolls plant-1, plant height (cm), seeds boll-1, seed cotton yield (kg ha-1). The genotype JA-08/D produced the highest seed cotton yield (3430 kg ha-1) followed by two genotypes JA-08/C (3329 kg ha-1) and JA-08/E (3226 kg ha-1). Though high heritability (90.36-97.46%) were estimated for four characters but high heritability along with high genetic advance values were observed for bolls plant-1, boll weight and seeds boll-1. The moderate heritability (83.58%) with high genetic advance (48.54%) suggests seed cotton yield is controlled by additive and non-additive genetic factors. In general, genotypic correlation coefficient was higher than corresponding phenotypic correlation coefficient due to inherent potential of the genotypes for expressing the individual characters. However, six characters, secondary sympodial branches plant-1, main stem nodes plant-1, days to 1st flowering, bolls plnat-1, boll weight and seeds boll-1 showed positive and significant association. Upon partitioning the correlation coefficients of seed cotton yield with other characters confirmed significant contribution of three characters like bolls plant-1, boll weight and seeds boll- 1. Therefore, three genotypes, JA-08/D, JA-08/C and JA-08/E and three characters, bolls plant-1, boll weight and seeds boll- 1 may be considered by the breeders for improving seed cotton yield in upland cotton.

scholarly journals Interaksi Genetik x Lingkungan dan Variabilitas Genetik Galur Gandum Introduksi (Triticum aestivum L.) di Agroekosistem Tropika

2016 ◽  
Vol 10 (3) ◽  
pp. 93 ◽  
Author(s):  
Amin Nur ◽  
Muh. Azrai ◽  
Trikoesoemaningtyas Trikoesoemaningtyas
Keyword(s):  
Genetic Variability ◽  
Chlorophyll A ◽  
Flag Leaf ◽  
Grain Filling ◽  
Triticum Aestivum L ◽  
Yield Component ◽  
Plant Weight ◽  
Seed Head ◽  
High Heritability ◽  
Wheat Lines

<p>The<br />focus of wheat research in Indonesia is to obtained new<br />potential wheat lines that are adapted to low-mid elevation<br />and heat tolerant. This study was aimed to obtain<br />information on the effect of interaction of season x line x<br />location and genetic variability of wheat lines in tropical<br />agroecosystem. This study was conducted at the Seameo-<br />Biotrop (&lt;400 masl) and Indonesian Ornamental Crops<br />Research Institute-Cipanas (&gt;1,000 masl) experimental field<br />for two seasons. The results showed that there was an effect<br />of interaction of season x line x location on plant height,<br />days to flowering, number of spikelet and floret, seed/head<br />weight, rate of grain filling, yield, flag leaf width, stomata<br />density, chlorophyll b, and leaf greenness. Meanwhile<br />several characters were only influenced by the interaction of<br />line x location, they were yield component characters, ie.<br />empty floret percentage, number of seed/ head, 1,000 seed<br />weight, number of head/m2 and seed/plant weight. Seven<br />characters were not influenced by interaction of neither<br />season x line x environment nor line x location, they were<br />number of productive tillers, head length, number of<br />seed/head, chlorophyll a, ratio of chlorophyll a/b, total<br />chlorophyll, and leaf thickness. The characters that have<br />high heritability and wide genetic variability for the two<br />analysis models were the number of spikelet.</p>

Screening of promising accessions of urdbean (V. mungo L.) from different agro‐ecological zones of Southern and South–Eastern Rajasthan (India) based on biometrical attributes

2012 ◽  
Vol 2 (2) ◽  
pp. 66-72
Author(s):  
S. S. Punia ◽  
Baldev Ram ◽  
Meenakshi Dheer ◽  
A. Raghuvanshi ◽  
N. R. Koli ◽  
...  
Keyword(s):  
Quantitative Traits ◽  
Agricultural Research ◽  
Block Design ◽  
Research Station ◽  
Genetic Advance ◽  
Ecological Zones ◽  
Qualitative And Quantitative ◽  
Randomized Block Design ◽  
Wide Range ◽  
High Heritability

Genetic variability among 133 accessions of urdbean (Vigna mungo) collected from different agro‐ecological zones of Southern and South–Eastern Rajasthan, India was assessed for several qualitative and quantitative traits. These accessions along with two national checks KU 96‐3 and RBU 38 were evaluated in randomized block design with three replications at experimental field of Agricultural Research Station, Ummedganj, Kota (25.18°N and 75.86°E), Rajasthan, India during kharif 2009 and 2010. Wide range of variability was observed for both qualitative and quantitative traits. Plant height (cm), primary branches and pods per plant showed high genetic advance and moderate to high heritability. This suggests that the selection based on these traits would be useful in improving the seed yield. The genotypes like KPU 1099, KPU 1057 and KPU 1086 can be used as promising donor parents in recombination breeding programme for obtaining high heterotic response and better segregants.

scholarly journals Genetic Variability, Heritability, Genetic advance and Divergence in Ethiopian Cowpea [Vigna unguiculata (L) Walp] Landraces

2020 ◽  
Author(s):  
Fantaye Belay ◽  
Kibrom Fischa
Keyword(s):  
Genetic Variability ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Agronomic Traits ◽  
Agricultural Research ◽  
Crop Improvement ◽  
Grain Filling ◽  
Genetic Advance ◽  
Improvement Program ◽  
Cluster Distance

Abstract Information on genetic variability in cowpea germplasm is important for crop improvement and for efficient utilization of the existing genetic resources. Hence, the objectives of the present investigation were to estimate genetic variability, heritability, genetic advance and to identify divergent parents from distantly related clusters among Ethiopian cowpea accessions. The field experiment was carried out using 42 accessions at Abergelle Agricultural Research Center on station during the 2019 cropping season. Data were collected for 8 agronomic traits and analysis of variance revealed significant differences (p<0.01) among the accessions for the traits studied. Seed yield had higher genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) coupled with the highest genetic advance as percent of mean (100%). All the traits had moderate (68.01) to very high (99.98%) broad sense heritability. Further, high heritability coupled with high genetic advance as percent of mean was attained for days to flowering, grain filling period, plant height, pod length, seed yield and thousand seed weight reflecting the presence of additive gene action for the expression of these traits and improvement of these traits could be done through selection. The cluster analysis based on agronomic traits revealed four distinct groups at 90% similarity level. The highest inter cluster D2 was recorded between cluster III and cluster IV (D2=133.69 units). The range of inter cluster distance was 15.25 to 133.69 units, respectively. In conclusion, the high genetic distance revealed among clusters has to be exploited via crossing and selection of the most divergent parents for future cowpea improvement program.

scholarly journals Gene action and component of genetic variance analysis in the thermo sensitive genetic male sterile (TGMS) line in rice (Oryza sativa L.)

2016 ◽  
Vol 8 (4) ◽  
pp. 2011-2015
Author(s):  
Pardeep Kumar ◽  
M. K. Nautiyal ◽  
Pankaj Kumar
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Gene Action ◽  
Research Centre ◽  
Genetic Advance ◽  
Spikelet Number ◽  
Additive Gene Action ◽  
Panicle Number ◽  
Additive Gene ◽  
High Heritability

The field experiment conducted with eighteen TGMS lines, seventy two F1’s and four checks in randomized complete block design with three replications at the Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during Kharif 2013 and Kharif 2014. Estimates of variance of general combining ability were lower than those of variance of specific combining ability for all the traits e.g panicle number per plant (0.54), 1000 grain weight (1.50), harvest index (3.83) and grain yield per plant (17.09) showing preponderance of non-additive gene action except panicle length (1.28) and spikelet number per panicle(522.70) which showed high gca and indicated additive gene action. High estimates of broad sense heritability coupled with high genetic advance in mean percentage for Spikelet number per panicle (98 and 27.23 respectively). For grain yield per plant (98 and 14.38) and grain number per panicle (97 and 19.93) high heritability coupled with moderate genetic advance (98 and 14.38) indicated the scope of getting better recombinants. Selection will be more effective for the traits those have high heritability and high genetic advance.

scholarly journals Variability and heritability analysis in short duration and high yielding Brassica rapa L.

2014 ◽  
Vol 38 (4) ◽  
pp. 647-657 ◽  
Author(s):  
MH Khan ◽  
SR Bhuiyan ◽  
MH Rashid ◽  
S Ghosh ◽  
SK Paul
Keyword(s):  
Brassica Rapa ◽  
Seed Weight ◽  
Positive Association ◽  
Morphological Characters ◽  
Genetic Advance ◽  
Significant Positive Association ◽  
Plant Seeds ◽  
High Heritability ◽  
Heritability Analysis ◽  
Weight Number

The experiment was carried out with 32 genotypes of Brassica rapa including two commercially cultivated varieties as checks to study their inter-genotypic variability, heritability, GCV, PCV, genetic advance, and CV percent considering 10 morphological characters at the experimental farm of SAU, Dhaka during November 2009 to February 2010. Significant variation was observed among the genotypes for all the characters studied except thousand seed weight. High GCV and PCV values were observed for number of secondary branches/plant. High heritability values along with low genetic advance in percentage of mean were obtained for 1000-seed weight, number of secondary branches/plant, seeds/siliquae, and siliquae length. Highly significant positive association of seed yield per plant was observed with number of primary branches/plant, number of secondary branches/plant and number of siliquae/plant. Considering variability among the genotypes, heritability, genetic advance, percent co-efficient of variance, and field performances, the genotypes G-15, G-19, G-1, G-3, G-4, G-10, G-18, G21, and G-24 were found suitable for future breeding programme. DOI: http://dx.doi.org/10.3329/bjar.v38i4.19020 Bangladesh J. Agril. Res. 38(4): 647-657, December 2013

Effect of PASP-KT-NAA on Leaf Senescence and Grain Filling Rate during the Grain-Filling Period in Different Temperature Zones

2013 ◽  
Vol 38 (9) ◽  
pp. 1698-1709
Author(s):  
Tian-Jun XU ◽  
Zhi-Qiang DONG ◽  
Jiao GAO ◽  
Chuan-Xiao CHEN ◽  
Liu JIAO ◽  
...  
Keyword(s):  
Leaf Senescence ◽  
Grain Filling ◽  
Filling Rate ◽  
Grain Filling Rate ◽  
Grain Filling Period

Effect of foliar application of chelated copper and manganese on yield components and fibre properties of Egyptian cotton (Gossypium barbadense)

1993 ◽  
Vol 121 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Z. M. Sawan ◽  
M. H. Mahmoud ◽  
B. R. Gregg
Keyword(s):  
Yield Components ◽  
Agricultural Research ◽  
Foliar Application ◽  
Field Studies ◽  
Gossypium Barbadense ◽  
Research Centre ◽  
Fibre Properties ◽  
Foliar Sprays ◽  
Egyptian Cotton ◽  
Cotton Cultivar

SUMMARYA decline in supplies of organic manures and the increased use of chemical fertilizers has led to a decrease in the micronutrient content of the soil, with attendant effects on yield.Field studies were conducted in 1986 and 1987 at the Giza Agricultural Research Centre, Egypt, to determine the effect of Cu-EDTA and Mn-EDTA foliar sprays on growth, mineral content, yield components and fibre properties of the Egyptian cotton cultivar Giza 75 (Gossypium barbadense L.).All combinations used significantly increased the uptake of Cu and Mn and the dry matter yield. The earliness of harvest and the value of yield components were all increased by the application of Cu or Mn; 25 mg/1 of both Cu and Mn gave the highest values. Lint percentage and fibre properties were not significantly affected.This study indicated that the yield of cotton, grown under otherwise standard conditions, may be increased by foliar sprays of Cu-EDTA and Mn-EDTA combined.

scholarly journals Tuber yield and nutrient balance of potato (Solanum tuberosum L.) Cultivation as influenced by different nutrients management under AEZ-28

2015 ◽  
Vol 39 (4) ◽  
pp. 641-659
Author(s):  
MAHS Jahan ◽  
MAR Sarkar ◽  
NCD Barma ◽  
MNA Mondal ◽  
MNS Ferdousi
Keyword(s):  
Nutrient Management ◽  
Tuber Yield ◽  
Agricultural Research ◽  
Management Practice ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Nutrient Balance ◽  
Research Centre ◽  
Gross Margin ◽  
Randomized Complete Block Design

A field experiment was conducted at Regional Wheat Research Centre of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur for 2 consecutive years during 2006-07 and 2007-08. The objectives were to find out the optimum nutrient management practice on tuber yield, nutrient balance and economics of potato cultivation. Twelve nutrient management treatments were tested in a randomized complete block design with 3 replications. Treatments were T1=HYG (0-198-44-194-24-6-1.2), T2=MYG (0-140-34-138-18-4.5-0.9), T3=IPNS (10000-168-38-170-18-6-1.2), T4=STB (0-171-40-164-22-5-1), T5=FP (0-97-16-91-0-0-0), T6=CON (0-0-0-0-0-0-0), T7=HYG+CRI, T8=MYG+CRI, T9=IPNS+CRI, T10=STB+CRI, T11=FP+CRI, T12=CON+CRI kg ha-1 CDNPKSZnB for potato. The highest tuber yield of potato was obtained from STB+CRI (27.64 t ha-1) followed by IPNS+CRI (27.35 t ha-1), STB (27.10 t ha-1), IPNS (26.83 t ha-1), HYG+CRI (26.52 t ha-1) and HYG (26.10 t ha-1) in 2006- 07. Similar trend was found in 2007-08. The highest tuber yield and yield contributing parameters were noticed in CRI plots than without CRI. Except N, remaining nutrient balance like P K S Zn and B were found positive in case of HYG, MYG, IPNS and STB along with or without CRI nutrient managements. The balance was found almost negative in case of FP and CON. The highest BCR was observed in STB+CRI (3.96) followed by STB (3.93), IPNS+CRI (3.76), and IPNS (3.74). The higher gross return (Tk. 283331 ha-1) and also gross margin (Tk. 211761 ha-1) was observed from the same treatment. DOI: http://dx.doi.org/10.3329/bjar.v39i4.22544 Bangladesh J. Agril. Res. 39(4): 641-659, December 2014

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