Relations of Yield Components in Sesame

1974 ◽  
Vol 10 (2) ◽  
pp. 97-103 ◽  
Author(s):  
H. El Gizouli Osman ◽  
M. Osman Khidir
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Correlation Coefficients ◽  
Regression Coefficients ◽  
Partial Regression ◽  
Days To Flowering ◽  
Quantitative Characters ◽  
Partial Correlations ◽  
Number Of Seeds ◽  
Plant Plant

SUMMARYSimple, partial and multiple correlations, as well as regression coefficients, were worked out for 14 quantitative characters in a collection of 42 sesame varieties grown for two consecutive seasons. Total number of seeds per plant, number of pods per plant, plant height, height to the first pod and days to flowering and maturity, gave positive and highly significant correlation coefficients with yield and with one another. Partial regression and partial correlations indicated that the number of pods per plant and plant height are important yield-contributing characters.

scholarly journals Variability and Interrelationship among Yield and Yield Contributing Characters in Onion (Allium cepa L.)

1970 ◽  
Vol 16 ◽  
pp. 85-88
Author(s):  
MS Hossain ◽  
M Khalekuzzaman ◽  
MH Rashid ◽  
MS Rahman
Keyword(s):  
Plant Height ◽  
Allium Cepa ◽  
Yield Components ◽  
Correlation Coefficients ◽  
Phenotypic Correlation ◽  
Fresh Weight ◽  
Allium Cepa L ◽  
High Heritability ◽  
Coefficients Of Variations ◽  
Number Of Seeds

A study was conducted using seven varieties of onion (Allium cepa L.) and observations were recorded on yield and yield components in order to obtain informations on genetic variability and character association of onion. Higher genotypic coefficients of variations were recorded in number of seeds per scape (NSPS), final plant height (FPH), final scape height , fresh weight of bulb and bulb length. These characters also exhibited high heritability along with high genetic advance as percentage of mean. Phenotypic correlation coefficients showed that bulb length, bulb diameter and scape diameter were positively and significantly correlated with fresh weight of bulb. The number of seeds per scape, final scape height, final plant height and number of pseudostem branches at maximum flowering stage were also positively and significantly correlated with seed yield per scape. Key words: Genetic variations, correlation, yield components, onion.   DOI:10.3329/jbs.v16i0.3746 J. bio-sci. 16: 85-88, 2008  

The relationship between fall dormancy and germplasm source in North American alfalfa cultivars

1996 ◽  
Vol 76 (3) ◽  
pp. 429-433 ◽  
Author(s):  
D. T. Fairey ◽  
N. A. Fairey ◽  
L. P. Lefkovitch
Keyword(s):  
Genetic Diversity ◽  
Regression Analysis ◽  
Plant Height ◽  
North American ◽  
The Other ◽  
Regression Coefficients ◽  
Large Contribution ◽  
Partial Regression ◽  
Fall Dormancy ◽  
The Relationship

Most of the genetic diversity of North American alfalfa cultivars has been accounted for by nine germplasm sources listed in descending order of winter hardiness as follows: Medicago sativa ssp. falcata, Ladak, M. sativa ssp. xvaria, Turkistan, Flemish, Chilean, Peruvian, Indian and African. In most instances, the breeder assigns a fall dormancy score and the relative proportions of each of the nine germplasm source for each cultivar at registration. The fall dormancy score (1 = dormant to 9 = non-dormant), determined by measuring plant height in October after harvest in early September, is used to indicate cultivar adaptation for different regions. This study examines the relationship between germplasm composition and plant height, the equivalence of fall dormancy. The signs on the partial regression coefficients of a multiple regression analysis of plant height on the proportional content of the nine sources of germplasm showed that the fall dormancy fell essentially into two classes, namely, a dormant category, comprising cultivars containing a large contribution of Falcata and Ladak, and a non-dormant category, in which Indian and African germplasm predominate. This does not necessarily preclude the influence of any of the other germplasm sources on fall dormancy, since they represent a rich source of diversity. However, nine distinct classes were not recognisable, perhaps because of the lack of an exact equivalence between fall dormancy class and plant height of the fall regrowth. Since these observations have not been derived in a common nursery, the latitude and latitude × cultivar effects have been disregarded. These limitations should be recognized when using the currently assigned fall dormancy ratings to predict cultivar adaptation. Key words: Alfalfa, fall dormancy, sources of germplasm

Genetic variability and inter-relationship of some quantitative characters in safflower

1974 ◽  
Vol 83 (2) ◽  
pp. 197-202 ◽  
Author(s):  
M. O. Khidir
Keyword(s):  
Plant Height ◽  
Indirect Effect ◽  
Block Design ◽  
Head Width ◽  
Positive Contribution ◽  
Quantitative Characters ◽  
Randomized Block Design ◽  
Relationship Of ◽  
100 Seed Weight ◽  
Number Of Seeds

SUMMARYEighteen varieties of safflower were studied in a randomized block design with five replications. Data on fourteen quantitative characters were recorded. Appreciable variability was displayed by all characters, especially yield and number of heads/plant. The heritability estimates ranged between 65 and 98%.Seed (achene) yield gave a significant positive genotypic correlation with number of seeds/head, head width, bract width and oil content. The 100-seed weight was significantly negatively correlated with the number of seeds/head and plant height at maturity. The genotypic correlations between yield/plant and four other traits were partitioned into direct and indirect effects. The highest direct positive contribution to yield was given by plant height, which had also a positive indirect effect via number of heads. The direct effect of the number of heads/plant was negative and the indirect effect via head width was positive.

Effect of laser priming on canola yield and its components under salt stress

2012 ◽  
Vol 26 (1) ◽  
pp. 45-51 ◽  
Author(s):  
S. Mohammadi ◽  
F. Shekari ◽  
R. Fotovat ◽  
A. Darudi
Keyword(s):  
Salt Stress ◽  
Plant Height ◽  
Correlation Coefficients ◽  
Yield Increase ◽  
Effect On Yield ◽  
Lateral Branches ◽  
Pod Length ◽  
Positive Effect ◽  
Pod Number ◽  
Number Of Seeds

Effect of laser priming on canola yield and its components under salt stressThe effect of laser priming at different irradiation times on canola yield and its components under saline conditions were investigated. The results showed that laser priming had a positive effect on yield and its components and caused yield increase under saline conditions. Increase in salt levels had a negative and significant effect on seed yield, number of seeds per pod, number of pod per plant, pod length and plant height. The results showed that 45-min laser priming had the strongest effect on yield and yield components and reduced significantly the adverse effects of salinity. By contrast, laser radiation applied for 60 and 75 min, resulted in a dramatic decrease in yield and its components. Correlation coefficients between the attributes showed that canola yield had a positive and significant correlation with plant height, number of seeds, pod per main branch and lateral branches, length of pod and number of lateral branches. Effects of laser and salinity were significant on lateral branch pod length but not on main branch pods.

scholarly journals Characterization and Field Performance of 15 Strawberry Germplasm under Bangladesh Conditions

2014 ◽  
Vol 11 (2) ◽  
pp. 81-94 ◽  
Author(s):  
M Moshiur Rahman ◽  
M Mizanur Rahman ◽  
M Mofazzal Hossain ◽  
MA Khaleque Mian ◽  
Q Abdul Khaliq
Keyword(s):  
Plant Height ◽  
Fruit Set ◽  
Pollen Viability ◽  
Field Performance ◽  
Viable Pollen ◽  
Days To Flowering ◽  
Qualitative And Quantitative ◽  
Quantitative Characters ◽  
Number Of Leaves

Fifteen strawberry germplasm collected from local and exotic sources were evaluated for different qualitative and quantitative characters. The germplasm showed variation for majority of the studied traits. Plant height during peak harvest ranged from 14.67 to 25.00 cm and FA 007 exhibited the tallest plants. The maximum number of leaves plant-1 was produced by FA 006 (46.67). The maximum number of runners plant-1 was obtained in FA 003 (68.67) followed by FA 004 (63.00), while the highest number of crown plant-1 was found in FA 007 (15.33) followed by FA 006 (14.67). Days to flowering varied from 48.33 to 102.30 among the germplasm and FA 008 required minimum (48.33) days for flowering. The germplasm FA 004 produced the highest number of flower trusses (35.50 plant-1) while it was the lowest in FA 010 (5.00 plant-1). The number of flowers plant-1 was found maximum in FA 003 (168.00 plant-1) and minimum in FA 010 (40.00 plant-1). Among the germplasm pollen viability varied significantly and maximum viable pollen was recorded in FA 010 (84 %), while it was lowest in FA 004 (12.00 %). The highest per cent fruit set was recorded in BARI Strawberry-1 (86 %) while, FA 013 (39 %) showed the lowest. Among the germplasm the highest yield plant-1 was recorded from FA 005 (737.70 g) followed by FA 006 (702.30 g) and was significantly higher than others while the lowest yield plant-1 was recorded from FA 013 (52.00 g), FA 014 (69.00 g), FA 009 (81.33 g) and FA 010 (121.30 g). DOI: http://dx.doi.org/10.3329/sja.v11i2.18404 SAARC J. Agri., 11(2): 81-94 (2013)

scholarly journals Yield components of the M7 Kipas Putih mutant soybean

2022 ◽  
Vol 951 (1) ◽  
pp. 012049
Author(s):  
Zuyasna ◽  
E Hayati ◽  
Y Ghufrani ◽  
A Marliah ◽  
B Basyah ◽  
...  
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Seed Weight ◽  
Yield Potential ◽  
High Yield ◽  
Plant Weight ◽  
Plant Seed ◽  
Quantitative Characters ◽  
Planting Distance ◽  
Mutant Lines

Abstract This study aimed to obtain the homogeny of M8 soybean lines in an effort to release new high yielding varieties. The research was conducted in Lamsidaya village, and the observation of yield components was carried out at the Plant Breeding Laboratory, Faculty of Agriculture, Universitas Syiah Kuala. This study did not use an experimental design, so that the quantitative characters were observed individually from each plant, then analyzed by estimating the heritability broad sense value and the progress of selection. The material used were var. Kipas Putih and var. Dega1 as control, eight of 7th generation Kipas Putih mutant lines (B4, B7, B10, B12, B13, B15, B18 and B22). All genotypes were planted in rectangular plot 10 m x 1 m, drainage 50 cm, and planting distance 50 cm x 30 cm. Plants were maintained in accordance with the recommendation for soybean cultivation from Balitkabi, and fertilizer NPK (16:16:16) was given 200 g/plot (200 kgha-1). Parameters observed included plant height, flowering time, harvest time, number of productive branches, total number of pods per plant, number of filled pods per plant, percentage of filled pods per plant, seed weight per plant, weight of 100 seeds, seed weight per plot, and yield potential. All quantitative characters indicated increase on selection except for the character of plant height, percentage of filled pods and weight of 100 seeds because the heritability value was low. The B18 line has the potential to become a new high yielding variety because it has a high yield potential (3.02 tons ha-1) with a large seed size compared to the other seven mutant lines and is also higher than the parent Kipas Putih and var Dega 1 varieties.

scholarly journals Effect of Mechanical, Cultural and Chemical Weed Control on Yield and Yield Components of Pigeonpeas, Cajanus cajan (L.) Millsp.

1969 ◽  
Vol 58 (4) ◽  
pp. 466-472
Author(s):  
R. Abrams ◽  
F. J. Juliá
Keyword(s):  
Plant Height ◽  
Weed Control ◽  
Yield Components ◽  
Cajanus Cajan ◽  
Seed Weight ◽  
Yield Increase ◽  
Pod Yield ◽  
Yield And Yield Components ◽  
Agricultural Experiment ◽  
Number Of Seeds

Four determinate and four indeterminate types of pigeonpea cultivars and experimental lines were grown at the Isabela Agricultural Experiment Substation during 1971-72 to determine the effects of mechanical, cultural and chemical weed control practices on six characters affecting pigeonpea yield. The chemical, mechanical and hand weed control treatments increased the green pod yield and the number of pods per plant, but had no effect on plant height, number of days to flower, seed weight, and number of seeds per pod. Greatest yield increase was obtained by weed control with chemicals.

scholarly journals Genetic variability, heritability, genetic advance and correlation among yield and yield components of rice (Oryza sativa L.)

2018 ◽  
Vol 1 (1) ◽  
pp. 149-160 ◽  
Author(s):  
Bhim Nath Adhikari ◽  
Bishnu Prasad Joshi ◽  
Jiban Shrestha ◽  
Naba Raj Bhatta
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Yield Components ◽  
Genetic Advance ◽  
Panicle Length ◽  
Thousand Grain Weight ◽  
Straw Yield ◽  
Days To Flowering ◽  
Genotypic Coefficient Of Variation

This study was conducted during summer 2015 at Regional Agriculture Research Station, Dipayal, Doti, Nepal to estimate the genotypic and phenotypic variability, heritability, genetic advance and correlation on grain yield and yield associated traits using 26 advance genotypes of lowland irrigated rice. Analysis of variance revealed the existence of significant difference for days to flowering, maturity, plant height, panicle length, thousand grain weight and grain yield. High heritability was estimated for days to flowering (0.88), maturity (0.79), thousand grain weight (0.48) and plant height (0.43) suggesting these traits are under high genetic control. High phenotypic variation was observed for grain yield (24.87%), number of grains/panicle (22.45%), number of panicles/m2 (20.95%) and straw yield (20.75%) while grain yield had medium (12.02%) and remaining traits showed low genotypic coefficient of variation (<10%). High phenotypic coefficient of variation estimated as compared to genotypic coefficient of variation showed environmental influence on the expression of traits. Grain yield (11.98) and days to flowering (10.32) showed medium and remaining traits sowed low genotypic advance as percent of mean. High to low heritability with moderate to low genotypic advance as percent of mean suggested these traits were governed by non additive gene thus direct selection is not beneficial. Further improvements on yield potentiality and yield traits on these genotypes are suggested by creating variation and selection. Panicle length (r = 0.230), days to flowering (r = 0.247), effective tillers (r = 0.488) and straw yield (r = 0.846) manifested significant positive association with grain yield indicating that yield can be increased if selection applied in favor of those yield components.

INTERRELATIONSHIPS AMONG YIELD COMPONENTS AND PLANT GROWTH CHARACTERS, AND THEIR CONTRIBUTION TO YIELD IN TWO SPECIES OF MUSTARD

1980 ◽  
Vol 60 (1) ◽  
pp. 285-289 ◽  
Author(s):  
S. U. AHMED
Keyword(s):  
Plant Growth ◽  
Yield Components ◽  
Seed Weight ◽  
Correlation Coefficients ◽  
Multiple Correlation ◽  
Late Maturity ◽  
Multiple Correlation Coefficients ◽  
Pod Length ◽  
Number Of Seeds ◽  
Growth Characters

Twelve cultivars belonging to two species of Brassica were used to determine the nature and degree of interrelationships among yield components and some plant growth characters, and their contribution to yield. Nine characters were studied and simple, partial, and multiple correlation coefficients were computed. Results indicated that pod length, number of pods per plant, number of seeds per pod, and seed weight per pod were positively and linearly associated with seed yield per plant and that these four component characters of yield were also interrelated with plant height. The percentage of oil in the seeds was positively correlated with seed weight, but negatively with number of seeds per pod. Late maturity was found to be undesirable because it reduces number of pods per plant.

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