scholarly journals Sesame germplasm evaluation for reproductive period and harvest index

Genetika ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 665-674
Author(s):  
Bachubhai Monpara
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Block Design ◽  
Reproductive Period ◽  
Breeding Programme ◽  
Randomized Block Design ◽  
Days To Maturity ◽  
Biological Yield ◽  
High Heritability ◽  
Crop Maturity

In sesame, reproductive period is a component of crop maturity and harvest index is a component of seed yield. Both are important traits in applied plant breeding and associated with seed filling process, which helps optimizing crop duration and maximizing sesame yield. The study was focused on genetic control of these traits and to identify potential genotypes to use as parents in breeding programme. Seventy sesame germplasm lines were evaluated in randomized block design replicated thrice. Great variability for reproductive period and harvest index was observed. High heritability accompanied by high genetic gain for reproductive period, harvest index, biological yield and seed yield. Reproductive period was associated positively with days to maturity. Harvest index was associated positively with seed yield and biological yield but negatively with days to maturity. These circumstances suggest that increasing seed yield in sesame is possible through breeding for reproductive period and harvest index. However, performance data of selected genotypes demonstrate that it is wise to select for yield in conjunction with high biological yield and greater proportion of photosynthate partitioning together with optimum length of reproductive period. Use of present genetic variation like MARGO-TALL in manipulating both reproductive period and harvest index may be beneficial in sesame breeding programme.

Evaluation of genetic variability, heritability and genetic advance in blackgram [Vigna mungo (L.) Hepper]

2018 ◽  
Author(s):  
Shilpa Chauhan ◽  
Raj Kumar Mittal ◽  
A. Lohar ◽  
Vinod Kumar Sood ◽  
Ranjana Patial
Keyword(s):  
Experimental Study ◽  
Seed Yield ◽  
Harvest Index ◽  
Block Design ◽  
Genetic Advance ◽  
Biological Yield ◽  
High Heritability ◽  
Superior Genotypes ◽  
Transgressive Segregants ◽  
Selection Of

An attempt was made to study blackgram germplasm with an objective to develop genetically diverse genotypes accompanied with high heritable components of yield contributing traits. The experimental material comprised of 21 blackgram genotypes, was examined during kharif 2015 and 2016. Experimental study conducted during kharif 2015, was mainly relied on selection of transgressive segregants, which were further analyzed in Compact Family Block Design during kharif 2016. The results depicted that families and progenies within families were significantly different for majority of the traits and found to be highly variable for biological yield, harvest index and seed yield. High heritability coupled with high genetic advance were recorded for plant height (74.15%, 33.12%), branches per plant (84.34%, 40.55%), biological yield (83.51%, 69.11%) and seed yield (84.50%, 66.11%). Thus, the present findings could be beneficial to develop superior genotypes through selection in blackgram breeding program.

Study of correlation and path coefficient analysis in germplasm lines of Indian mustard (Brasica juncea L.)

2016 ◽  
Vol 36 (2) ◽  
Author(s):  
Rajeev Kumar ◽  
S. S. Gaurav ◽  
S. Jayasudha ◽  
Hitesh Kumar
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Block Design ◽  
Indian Mustard ◽  
Correlation Study ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Days To Maturity ◽  
Biological Yield ◽  
Positive Direct

An investigation was undertaken to study the correlation and path coefficient analysis of twelve quantitative traits in 30 Indian mustard (<italic>Brassica Juncea</italic> L<italic>.</italic>) germplasm lines. The experimental material was evaluated in a randomized block design with three replications. Correlation study revealed that harvest index and total biological yield per plant exerted high significant positive correlation coefficients with seed yield at both genotypic and phenotypic level. Seed yield is negatively correlated with days to 50 % flowering and days to maturity which promotes early flowering and early maturing genotypes. Path analysis revealed that harvest index showed maximum positive direct effect, followed by total biological yield per plant, days to maturity, siliquae length at the time of maturity and seed yield per plant at both genotypic and phenotypic levels. Based on result it has been concluded that two traits namely harvest index and total biological yield per plant exerted high correlation as well as direct influence on seed yield may be considered for selection and to improve the seed yield of the mustard genotypes.

Genetic association studies for yield and yield related traits in pigeonpea [Cajanus cajan (L.) Millsp.]

2016 ◽  
Author(s):  
Praveen Pandey ◽  
Rajesh Kumar ◽  
Vankat Raman Pandey
Keyword(s):  
Seed Weight ◽  
Harvest Index ◽  
Association Studies ◽  
Block Design ◽  
Genetic Association Studies ◽  
Selection Strategy ◽  
Randomized Block Design ◽  
Days To Maturity ◽  
Biological Yield ◽  
100 Seed Weight

Twenty three pigeonpea genotypes were evaluated in a randomized block design during Kharif 2012-13. The objective of this research was to assess inter-relationships, direct and indirect effects among yield and its components for genetic improvement of pigeonpea. The analysis of variance revealed highly significant differences for all characters under study among the genotypes. Considering the correlation analysis biological yield/plant, pods/plant, 100-seed weight, harvest-index and secondary branches/plant had highly significant positive correlation with seed yield. Path analysis identified biological yield/plant followed by harvest-index, pods/plant, days to maturity, primary branches/plant 100-seed weight and seeds/pod as most important direct yield components while biological yield/plant and harvest-index as most important indirect components. Hence, these traits should be given much emphasis at the time of devising selection strategy to achieve a quantum jump in pigeonpea yield.

Effect of crop geometry, fertilizer levels and genotypes on growthand yield of fenugreek (Trigonellafoenum-graecum L.)

2016 ◽  
Author(s):  
S. S. Meena ◽  
R. Meena ◽  
R. S. Mehta ◽  
R. K. Kakani
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Block Design ◽  
Rabi Season ◽  
Plant Seed ◽  
Straw Yield ◽  
Net Return ◽  
Randomized Block Design ◽  
Biological Yield ◽  
Crop Geometry

A field experiment was conducted during rabi season of 2012-13 which consisted of two spacing viz., 30 cm x10 cm (S1), 22 cm x 10 cm (S2) and two fertilizer levels viz., F1- 40:40:20 kg NPK per ha, F2- 50:50:25 kg NPK per ha and three genotypes viz., Ajmer Fenugreek-1 (V1), Ajmer Fenugreek-3 (V2) and Ajmer Fenugreek-4 (V3). The experiment was laid out in factorial randomized block design with three replications. Result revealed that significantly higher seed yield (2437.4 kg ha-1), straw yield (3356.8 kg ha-1), biological yield (5794.2 ha-1), net return (Rs.57358 ha-1) and BCR (2.5) were recorded with sowing at a spacing of 22 cm x 10 cm as compared to 30 cm x 10 cm spacing but numbers of pods per plant (37.0), seed yield per plant (43.5 g), test weight (16.6 g) and harvest index (41.80) were higher in 30 cm x 10 cm spacing. Irrespective of spacing and genotypes, the application of 125 percent RDF ( NPK 50:50:25) recorded significantly more pods (40.7) per plant, seed yield (41.9 g) per plant, seed yield (2249.1 kgha-1), straw yield (3094.2 kgha-1), biological yield (5343.2 kgha-1), 1000 seed weight (16.4 g), harvest index (42.07), net return (Rs.51091.0 ha-1) and BCR (2.3) as compared to 100 percent RDF(NPK 40:20:20). Significantly higher number of pods (42.9/pod), seed yield (45.9 g/plant), seed yield (2270.7 kgha-1), straw yield (3066.8 kgha-1), biological yield (5337.4 kgha-1), net return (Rs.51927.0 ha-1) and BCR (2.3) were recorded with AFg-4. Thus, it is inferred that sowing at 22 cm x 10 cm spacing with application of 125 per cent of recommended dose of fertilizer is better for realizing higher yield, net return and BCR.

Genetic variability and character association studies for seed yield and component characters in soybean [Glycine max (L.) Merrill] under North-western Himalayas

2018 ◽  
Author(s):  
Santosh Kumar ◽  
Vedna Kumari ◽  
Vinod Kumar
Keyword(s):  
Genetic Variability ◽  
Seed Yield ◽  
Harvest Index ◽  
Association Studies ◽  
Block Design ◽  
Direct Selection ◽  
Western Himalayas ◽  
Plant Seed ◽  
Biological Yield ◽  
Four Blocks

The present investigation was undertaken to assess the genetic variability and character associations for seed yield and component characters in 307 soybean germplasm lines. The lines were raised in augmented block design in four blocks during kharif 2014. Out of these, twenty seven promising genotypes were selected and forwarded for evaluation along with four checks in randomized block design with three replications at CSKHPKV, Palampur (H.P) during kharif 2015. The analysis of variance revealed the presence of sufficient genetic variability in the breeding material. High PCV and moderate GCV were recorded for harvest index and biological yield/plant. High heritability coupled with high genetic advance were observed for harvest index followed by biological yield /plant, seed yield /plant, number of pods/plant and 100-seed weight indicating the predominance of additive gene action in controlling the trait. Number of branches /plant, number of seeds /pod, biological yield/plant and harvest index exhibited significantly positive correlation with seed yield /plant both at phenotypic and genotypic levels. Two traits viz., harvest index and biological yield /plant could be considered as direct selection indices for yield improvement in soybean.

scholarly journals Inheritance of Some Quantitative Characters in Pigeonpeas (Cajanus cajan (L.) Mill sp.)

1969 ◽  
Vol 55 (1) ◽  
pp. 23-43
Author(s):  
Abad Morales Muñoz ◽  
Raúl Abrams
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Block Design ◽  
Flowering Plant ◽  
Frequency Distributions ◽  
Flowering Date ◽  
Randomized Block Design ◽  
Genotypic And Phenotypic Correlations ◽  
High Heritability

Three varieties and an irradiation-derived line of pigeonpeas were used as parents in five crosses as follows: P.I. 5690 X Kaki, P.I. 5690 X Saragateado, P.I. 5690 X 526, Kald X 526, and Saragateado X 526. The F2, F3 and parents of each cross were planted in the field at the Isabela Substation during 1966-67 in a randomized block design with three replicates. Genotypic variability was studied and genotypic and phenotypic correlations were calculated for all the crosses in the F2 and F3 generations. Genetic coefficients of variation and heritability estimates were computed for four traits in five crosses and for six traits in one particular cross. Frequency distributions are shown for date of flowering, plant height, and seed weight. There was much greater variation for all crosses, in general, in seed weight, plant height, and flowering date than in number of seeds per pod. With the exception of number of pods per plant the correlations between seed yield and other traits were not great enough to provide reliable indications for yield. The phenotypic and genotypic correlations between seed yield and number of pods per plant were high, above 0.90. However, their low heritability, 45.3 and 52.1 percent in F2 and F3 generations, tends to indicate that not too much progress could be expected for seed yield improvement by selecting for large number of pods per plant. Good progress by selection could be made by breeders in traits such as flowering date, plant height, and seed weight which showed high heritability values.

Induced Genetic Variability through Physical and Chemical Mutagens in M2 Generation of Greengram

2020 ◽  
Author(s):  
Akashi , , , , , Sarma ◽  
V. J. Dhole ◽  
A. Bhattacharjee ◽  
P. Das ◽  
D. Sarma ◽  
...  
Keyword(s):  
Seed Yield ◽  
Gene Action ◽  
Block Design ◽  
Positive Correlation ◽  
Randomized Block Design ◽  
Additive Gene ◽  
High Heritability ◽  
Almost All ◽  
Physical And Chemical ◽  
Pod Length

Uniform and healthy seeds of green gram cv. Pratap (SG-1) were treated with two mutagens, gamma rays (physical mutagen) and EMS (chemical mutagen) alone and in combination. The two hundred forty M1 progenies were laid in randomized block design with three replications during Kharif, 2017 to raise M2 generation. Analysis of variance discloses significant differences among the treatments for all the eight characters studied. It was observed that in general, the combination dose, i.e., 200 Gy+0.2% EMS gave superior results in almost all the yield attributing characteristics. High heritability coupled with high genetic advance was recorded for seed yield per plant, which indicates the predominance of additive gene action. Number of pods per plant followed by pod length showed high significant positive correlation with seed yield per plant. The character number of pods per cluster had shown positive correlation with seed yield per plant, but path analysis revealed its negative direct effect on seed yield.

scholarly journals Effect of phosphorus on growth and yield of sesame

2019 ◽  
Vol 6 (2) ◽  
pp. 245-251
Author(s):  
Nushrat Jahan ◽  
ABM Shafiul Alam ◽  
Atiya Sharmin Mitu ◽  
Md Ahasan Habib ◽  
Md Sefaur Rahman
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Harvest Index ◽  
Block Design ◽  
Growth And Yield ◽  
Stover Yield ◽  
Biological Yield ◽  
Number Of Leaves ◽  
P Application

The present study was conducted at the Research farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, during March to June 2014 to examine the effect of Phosphorus on the growth and yield of Sesame. BARI Til-3 variety was used for the study. This experiment was consisted of single factor eg. phosphorus. There were three levels of phosphorus viz. (i) P0 (0 % P), (ii) P1 (20 % P) and (iii) P2 (30 % P) and the experiment was laid out in a Randomized Complete Block Design (RCBD) with six replications. Different levels of phosphorus showed significant effect on growth and yield of sesame. Individually phosphorus had significant effect on highest plant height, number of leaves plant-1, number of primary branches plant-1, number of secondary branches plant-1, number of capsule plant-1, number of seeds capsule-1, 1000 seed weight, seed yield and harvest index. The highest plant height of sesame (136.30 cm), the highest no leaves plant-1 of sesame (34.44), number of primary branches plant-1 (5.56), number of secondary branches plant-1 (7.61), number of capsule plant-1 (25.87), number of seed capsule-1 (70.47),1000 seed weight (3.54), Seed yield (1581.00 kg ha-1), Stover yield (3034.42 kg ha-1), biological yield (4615.76), harvest index (34.11%), oil content (43.92%) was recorded from P1. Again, the highest days to first flowering of sesame (31.67) was recorded from P1 (20 % P) but the highest days to maturity was (85.67) recorded from P2 (30% P). Application of P at different percentage is causing effect in growth and yield of sesame. Res. Agric., Livest. Fish.6(2): 245-251, August 2019

scholarly journals Genetic variation and characterization of different linseed genotypes (Linum usitatissimum L.) for agro-morphological traits

2017 ◽  
Vol 9 (2) ◽  
pp. 754-762
Author(s):  
Satish Paul ◽  
Nimit Kumar ◽  
Pankaj Chopra
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Crop Improvement ◽  
Genetic Advance ◽  
Linum Usitatissimum L ◽  
Biological Yield ◽  
Additive Gene ◽  
High Heritability ◽  
Apparent Variation

Forty five linseed genotypes (local collection) were subjected to study the genetic variability at the Experimental Farm of the Department of Crop Improvement, CSK Himachal Pradesh KrishiVishvavidyalaya, Palampur, during rabi 2015-2016. Analysis of variance revealed that the differences among all the genotypes were significant for all the traits. Mean performance of genotype KLSA-15 for seed yield recorded highest contribution of 3.69 grams. The PCV values were greater than the GCV values for all the traits studied indicating that the apparent variation is not only due to genotypes but, also due to the influence of environment. The highest PCV (64.17) and GCV (64.09) were found for biological yield per plant. Higher estimates of PCV and GCV were obtained for primary branches per plant, secondary branches per plant, capsules per plant, biological yield per plant, harvest index (45.94 and 44.60) and seed yield per plant (52.39 and 50.94). All the characters studied in the present investigation expressed high heritability estimates ranging from 62.95 to 99.77 percent for technical height and biological yield per plant respectively. It was revealed that most of the traits under study showed low genetic advance, high heritability (94.23) and high genetic advance (31.06) was recorded for harvest index indicating predominance of additive gene action for this character. Simple selection based on phenotypic performance of this character would be more effective. The cluster analysis showed that the genotypes were placed into four clusters, showing inter-cluster divergence, which is important for future hybridization programme.

scholarly journals How Much, Leaves Near the Ear Contribute on Yield and Yield Components of Maize?

2014 ◽  
Vol 47 (2) ◽  
pp. 5-12
Author(s):  
J. Jalilian ◽  
H. Delkhoshi
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Harvest Index ◽  
Block Design ◽  
Leaf Position ◽  
Leaf Clipping ◽  
Yield And Yield Components ◽  
Biological Yield

Abstract In order to study the role of leaf position on yield and yield component of maize, this research was conducted based on randomized complete block design with three replicates at the research field of Urmia University, Urmia, Iran, in 2011. For determine the role of leaf position in maize yield, we used the leaf removing (clipping) treatments. Leaf clipping treatments contain ear leaf clipping, above ear leaf clipping, below ear leaf clipping and control (without leaf clipping) that imposed at one week after ear initiation. Leaf removing had a significant effect on all measured traits (number of seed per row, row number per ear, ear length, 1000 seed weight, seed yield, biological yield), except harvest index. Removing of above leaves decreased 6.68% the number of seeds on ear compare to control. The highest 1000 seed weight (274 g) was observed in plants without leaf clipping. Ear leaf clipping and below ear leaf defoliation ranked second for 1000 seed weight. Whereas plants without any leaf clipping had the utmost seed yield (8.77 t ha-1) but defoliating of leaf above ear lead to lower seed yield (6.77 t ha-1). Leaf removal above ear decreased 22.80% biological yield compared to control. The correlation analysis showed that all traits had positive correlation with seed yield. The most correlation was between ear length and number of row per ear (r=0.89**). Also, number of seed per row (r=0.71**), 1000 seed weight (r=0.67**), ear length (r=0.65**), biological yield and harvest index (r=0.59**) showed the most correlation with seed yield, respectively. Results revealed that the most reduction in all traits accrued in maize plants with above ear leaf clipping, this results indicated that the important roles of leaves position especially the role of above ear leaves in yield and yield components of maize.

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