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Studies on genetic variability, correlation and path analysis in coriander (Coriandrum sativum L.)

KrishiKosh

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Title Studies on genetic variability, correlation and path analysis in coriander (Coriandrum sativum L.)
 
Creator Singh, Chhaya
 
Contributor Sharma, D.P.
 
Subject bacteria, planting, iron, productivity, biological development, concentrates, sampling, fungi, diseases, apples
HORTICULTURE
 
Description ABSTRACT


The present investigation entitled “Studies on genetic variability, correlation and path analysis in coriander (Coriandrum sativum L.)” was carried out during Rabi season of 2014-15 at Horticulture complex, Department of Horticulture, JNKVV, Jabalpur (M.P.) with objectives to the study the extent of genetic variability, heritability and genetic advanced for yield and its contributing characters, to asses the correlation coefficient between yield and its contributing characters, to estimate the direct and indirect effect of yield and its contributing traits through path coefficient analysis.

The experiment was laid out in Randomized Complete Block Design (RCBD)

with twenty four genotypes and three replications. The plot size was kept 3 m x

2.25m. The row to row distance was 30 cm and plant to plant distance was 10 cm. twenty one genotypes were collected from IISR, Calicut namely COR-74, COR-75, COR-76, COR-77, COR-78, COR-79, COR-80, COR-81, COR-82, COR-83, COR-
84, COR-85, COR-86, COR-87, COR88, COR-89, COR-90, COR-91, COR-92, COR-93, COR-94, Hissar Anand was collected from Hissar, RCR728 was collected from Gujarat, Kumbhraj was collected from (M.P). Various observations were recorded for characterization of garlic morphological traits under study. The genotypes COR-84 was recorded maximum in characters like number of umbels per plant (30.63), number of umbellets per umbel (7.10), number of seeds per umbel (71.87) ,weight of seeds per umbel (0.71g), number of seeds per plant (186.27), seed yield per plant (1.26 g) and seed yield per ha (4.14 q) . However, the genotype COR-77 was observed maximum in characters like plant height (123.67 cm) . Whereas the genotypes COR-90 maximum in days to first flowering (71.00 days) and days to 50% flowering (74.00 days) and COR-84 minimum in days to maturity (108 days).

The analysis of genetic parameters showed the PCV was higher than the GCV for all the characters. High PCV and GCV was observed for number of umbel per plant followed by number of seeds per plant, plant height at 30 DAS, weight of seeds per umbel, number of seeds per umbel, indicating greater diversity for these traits and their further improvement through selection. High estimates of heritability were obtained for the traits like number of seed per plant (99.38%) followed by days to maturity, number of umbels per plant, number of seed per umbel and number of secondary branches per plant which indicated that the high values of broad sense

heritability for these characters expressed that they were least influenced by environmental modification. It reflected that the phenotypes were the true representative of their genotypes and selection based on phenotypic performance would be reliable.The higher value of genetic advance as percent of mean was recorded for number of umbels per plant, number of seeds per plant, number of seeds per umbel, weight of seeds per umbel and number of secondary branches per plant.

High heritability coupled with high genetic advance as percentage of mean for traits like weight of seeds per umbel, suggested that they can be improved through direct selection.

High heritability supplemented with moderate genetic advances as percentage of mean was manifested by plant height at 90 DAS . This might be attributed to additive gene action conditioning their expression and phenotypic selection for their amenability can be brought about.

High heritability coupled with low genetic advance as percentage of mean was observed for seed yield per plant. This revealed the predominance of non-additive gene action in the expression of these characters.

Low estimates of heritability coupled with low genetic advances as percentage of mean were displayed by number of umbellets per umbel, seed yield per hectare that indicated that this character was highly influenced by environmental effects and consequently its selection would be ineffective.

The highest positive and significant correlation coefficient of seed yield per plant was observed with number of umbellets per umbel and number of seeds per plant. The highest positive and significant correlation coefficient of seed yield per plant was noted with number of umbellets per umbel , number of seeds per plant, number of secondary branches per plant, weight of seeds per umbel, number of seed per umbel and plant height at 90 DAS indicating that these characters is the primary yield determinant in coriander. The yield attributing characters exhibited varying trend amongst them.

Path coefficient analysis revealed that seeds per plant, seed weight per plant, umbels per plant and seeds per umbel.are the most important character contributing towards fruit yield and hence purposeful and balance selection based on these character would be rewarding improvement in coriander.
 
Date 2016-06-23T14:15:05Z
2016-06-23T14:15:05Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67856
 
Language en
 
Format application/pdf
 
Publisher JNKVV