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Paper Information

Journal:   IRANIAN JOURNAL OF RANGELANDS AND FORESTS PLANT BREEDING AND GENETIC RESEARCH   SPRING 2006 , Volume 14 , Number 1 (23); Page(s) 25 To 31.
 
Paper: 

DETERMINING MOST EFFECTIVE TRAITS ON FORAGE YIELD IN SOME POA SPECIES

 
 
Author(s):  MORADI PARVIZ*, JAFARI ALI ASHRAF
 
* AGRICULTURAL AND NATURAL RESEARCH CENTER OF ZANJAN
 
Abstract: 

Correlation coefficient indicates only size and sign of relationship between traits. Path analysis can determine direct and indirect effects. Thus, plant breeders use path analysis to identify effective traits on yield. An investigation was conducted in unbalanced CRD including 27 genotypes (7 Poa species) collected from different parts of Zanjan province. Significant relationship was found by simple correlation coefficient among yield and traits, including spike weight, stem weight, spike length, pollination date, flowering date, stem number and leaf to stem ratio. After regression analysis, number of effective traits reduced to four traits, including spike weight, fresh forage weight, crown diameter and plant height. Final equation explained 96 percent of total variation. Eventually, path analysis showed that spike weight and fresh forage weight had the most direct effect on yield.

 
Keyword(s): GENETIC VARIATION, FORAGE YIELD AND POA
 
References: 
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  Persian Abstract Yearly Visit 87
 
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