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National Agricultural Research Centre (NARC), Islamabad  established in 1984, is the largest research centre of the Pakistan Agricultural Research Council (PARC). NARC, with a total land area of approximately 1400 acres, is located near Rawal Lake, six kilometers south-east of Islamabad. Physical facilities in term of experimental fields, laboratories, green houses, gene bank, library/ documentation, auditorium, machinery & lab equipment repair workshops, stores, hostels, cafeteria, audio visual studios, are also available at NARC.

Journal Article

Journal Article

Genetic divergence and path coefficient analysis for seed yield traits in sunflower (Helianthus annuus L.) hybrids  [2007]

Arshad, M. (National Agricultural Research Centre, Islamabad (Pakistan). Oilseeds Programme); Ilyas, M.K. (National Agricultural Research Centre, Islamabad (Pakistan). Oilseeds Programme); Khan, M.A.;

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Twenty sunflower hybrids were evaluated for various parameters under field conditions to estimate genetic parameters, correlation coefficient, and path analysis and linkage distance. Analysis of variance and mean performance for yield and its components revealed significant differences among all the genotypes for all the characters. Results revealed highly significant differences among all the hybrids. Days to maturity had positive correlation with head diameter but negative association with seed yield. However, seed yield had highly positive genotypic correlation with oil contents but non-significant with 100 seed weight. Oil contents had negative association with days to flower initiation, completion and plant height but significantly positive correlation with seed yield. The direct effects of days to flower initiation plant height and head diameter were positive while remaining characters exhibited negative direct effects. The highest direct effect was exhibited by days to flower initiation and plant height. Head diameter had also positive direct effect on seed yield. Cluster diagram using Ward's method revealed three clusters at 50% linkage distance. Results revealed that the hybrids in cluster-II, were short duration, high yielding more 100 seed weights and oil contents percentage. Therefore, it is suggested that these hybrids could be exploited under wide range of environments for better out come.
From the journal
Pakistan Journal of Botany (Pakistan)
ISSN : 0556-3321

Bibliographic information

Type:
Journal Article
In AGRIS since:
2008
Volume:
39
Issue:
6
Start Page:
2009
End Page:
2015
All titles:
"Genetic divergence and path coefficient analysis for seed yield traits in sunflower (Helianthus annuus L.) hybrids"@eng
Other:
"2 ills., 4 tables, 18 ref., Summary (En), E-mail: marshadnarc@hotmail.com"
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Bibliographic information

Type:
Journal Article
In AGRIS since:
2008
Volume:
39
Issue:
6
Start Page:
2009
End Page:
2015
All titles:
"Genetic divergence and path coefficient analysis for seed yield traits in sunflower (Helianthus annuus L.) hybrids"@eng
Other:
"2 ills., 4 tables, 18 ref., Summary (En), E-mail: marshadnarc@hotmail.com"