Analiza korelacije i path koeficijenta pojedinih parametara roditeljskih linija suncokreta

Siniša Jocić,Goran Jaćimović,Igor Balalić,Miloš Krstić,Milan Jocković,Velimir Radić

doi:10.5937/ratpov58-26782

Abstract

The trial in this study was carried out in field conditions throughout three years from plots where seed production of sunflower parental lines was established. Eight genotypes were examined; namely RHA-UK, RHA-ST-59, RHA-SES-IMI, RHA-SNRF, RHA-E-ANN-65, RHA-RU-3, RHA-CDN, and RHA-N-M-1. All the examined genotypes are parental components of the best sunflower hybrids developed by the Institute of Field and Vegetable Crops, Novi Sad, Serbia. Relationships between seed yield and eight different traits in sunflower were studied - oil and protein content, seed germination, 1000-seed weight, head diameter, number of branches and leaves and plant height. The same analyses were carried out for comparison of oil content. A highly significant positive correlation was determined between plant height and number of branches; plant height and the number of leaves; plant height and head diameter; plant height and seed yield; number of branches and yield; the number of leaves and yield; head diameter and seed yield; number of leaves and number of branches; number of leaves and head diameter and between seed germination and oil content. Path analysis indicated highest significant direct effect of plant height on yield (0.439**). The number of branches had a significant positive direct effect on yield (0.260*). In the study of indirect effects on yield, thirteen significant effects were determined. The study of direct effects on oil content showed that the plant height and number of leaves diameter had high significant effects (0.800** and -0.847**). The existence of indirect significant effects on oil content was determined in nine cases.

Highlights

All the examined genotypes are parental components of the best sunflower hybrids developed by the Institute of Field and Vegetable Crops, Novi Sad, Serbia
Gorgieva et al (2015) showed that 1000-seed weight has the highest direct positive effect on seed yield and they concluded that these results indicate that an increase of 1000-seed weight causes some increase in sunflower seed yield
The study of direct effects on oil content showed that the plant height and number of leaves diameter had high significant effects (0.800** and -0.847**; but it wasn’t confirmed by the correlation coefficient 0.171 and -0.219)

Summary

Introduction

Sincik & Goksoy (2014) determined significant and positive correlation coefficients between the seed yields and the plant heights, head diameters, and 1000-seed weights. According to Pandya et al (2015), oil content showed negative non-significant correlation with days to maturity, stem diameter, number of leaves per plant, plant height, and 100 seed weight.

Results

Conclusion