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Genotypic and phenotypic path analysis in sunflower (Helianthus annuus L.) [electronic resource].

By:

Teilep, W. M. A. Kh

Contributor(s):

Farag, Sahar A

Language: English Summary language: Arabic Description: p.35-41Other title:

تحليل معامل المرور الوراثى والمظهرى فى محصول زهرة الشمس [Added title page title]

Uniform titles:

Agricultural research journal, Suez Canal University, 2013 v.13(1) [electronic resource].

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In: Agricultural Research Journal, Suez Canal University 2013 v.13(1)Summary: Two field experiments were conducted at in two locations, Kafr-El-Hamam Agricultural Research Station and Tag-El-Aiz Agricultural Research Station during the summer seasons of 20ll and 2012, to study the effect of three intra-row plant spacing (20, 25 and 30 cm between hills) on seed yield and its components of eight sunflower genotypes. Also, the associations among seed yield and its components were studied using correlation coefficient and path analysis at the genotypic and phenotypic levels. The used experimental design was a split plot design with three replicates. The three plant spacing were assigned to the main plots while the sub plots were devoted to the tested genotypes. Results showed significant differences among sunflower genotypes and among plant spacing treatments, for all studied characters over locations and seasons. It is noted that increasing intra-row plant spacing to 30 cm between hills (low plant density) led to significant increments for all studied characters, except plant height. The elite genotype No 7 (L40) recorded the maximum values of head diameter, weight of 100 seeds, seed yield and oil yield. As a result of interaction, genotype No 7 (L40) produced the maximum values of head diameter, weight of 100 seeds, seed yield and oil yield when it was grown at 30 cm between hills.

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Two field experiments were conducted at in two locations, Kafr-El-Hamam Agricultural Research Station and Tag-El-Aiz Agricultural Research Station during the summer seasons of 20ll and 2012, to study the effect of three intra-row plant spacing (20, 25 and 30 cm between hills) on seed yield and its components of eight sunflower genotypes. Also, the associations among seed yield and its components were studied using correlation coefficient and path analysis at the genotypic and phenotypic levels. The used experimental design was a split plot design with three replicates. The three plant spacing were assigned to the main plots while the sub plots were devoted to the tested genotypes. Results showed significant differences among sunflower genotypes and among plant spacing treatments, for all studied characters over locations and seasons. It is noted that increasing intra-row plant spacing to 30 cm between hills (low plant density) led to significant increments for all studied characters, except plant height. The elite genotype No 7 (L40) recorded the maximum values of head diameter, weight of 100 seeds, seed yield and oil yield. As a result of interaction, genotype No 7 (L40) produced the maximum values of head diameter, weight of 100 seeds, seed yield and oil yield when it was grown at 30 cm between hills.

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