Determining relationships among seed yield and some yield components using correlation, regression and path analysis in canola (Brassica napus L.)
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 1
Abstract
Determination of the traits affects seed yield is very efficient in breeding of this trait in canola (Brassica napus L.). Seed yield is the quantitative trait that direct selection per se isn’t effective for improvement this. Therefore, indirect selection through traits having higher heritability and correlated strongly with seed yield has more genetic efficiency than direct selection in genetic improvement of this trait. Hence, in order to determine the best indirect selection criteria for genetic improvement of seed yield in canola a split plot design in the layout randomized complete block design with three replications was conducted. Four planting dates 15 October, 22 October, 29 October and 5 November were considered as main factor levels in the main plot. Also, ten canola cultivars were used as sub factor levels and were arranged randomly in the sub plots. Step-wise regression of seed and oil yield revealed that 98.9% of total variation exists in seed yield accounted for by the traits grain filling rate, grain filling duration and biological yield. 95.7, 2.3 and 0.9% of seed yield variation accounted for by these traits, respectively. Path analysis for seed yield as dependent variable showed amongst the highest direct effect on seed yield belongs to grain filling rate. Grain filling duration and biological yield had the maximum indirect effects on seed yield. In conclusion, results revealed high efficiency of the trait grain filling rate as indirect selection criterion for genetic improvement of seed yield in canola cultivars especially in early generations of breeding programs.
Authors and Affiliations
Arezoo Armin, Ahmad Reza Golparvar, Bahram majd Nassiri, Mohammad Reza Naderi
Keywords
Related Articles
- EP ID EP32498
- DOI -
- Views 330
- Downloads 0
Investigate the relationship and path coefficient analysis between yield and yield components of canola cultivars
In order to investigate the relationship between traits and analysis to causal relationships in canola, an experiment was conducted on 7 canola cultivars in a randomized complete block design with four replications in...
Total Phenolic Content, Antioxidant Activity and Antifungal Property in Two Parts of Garden Thyme Shoot
The experiment was conducted using the two years old thyme plants. Upper section of shoots were divided into two 10 cm parts (top and bottom). Methanolic extract was prepared for determination of total phenolic content...
Nitrate and Heavy Metal Contents In Eggplant (Solanum melongena) cultivated in the farmlands in the south of Tehran-Iran
Egg plant, Solanum melongena is a common and popular vegetable crop grown in the different parts of Iran and is a common vegetable on Iranian diet. Due to the importance role of Nitrate and heavy metals play in health...
The Estimate of Heterosis and Combining Ability Some Morphological Characters in Tomato Transplants (Lycopersicon esculentum Mill.)
To examine the combining abilities of nine tomato lines, parental lines (Supc (P1), Pte12 (P2), Mb3 (P3), Supl44 (P4), Vfj (P5), Ptk (P6), Sps (P7), Csh74 (P8) and Prg (P9)) were placed in a complete diallel crosses de...
German chamomile yield at the different sowing date in intercropping with saffron
This study was conducted to examine the effect of sowing date on growth properties and yield of German chamomile in mixed culture of it with saffron (2011-2012 years) in a four years old saffron farm located in central...