Relationship of phenological and physiological traits with grain yield and yield components in Teriticale genotypes in the Gonbad region

Subject Areas :

Marziyeh  Rashidpour ¹ (Master Student of Agronomy Science and Research Branch)
HosseinAli  Fallahi ² (Assistant Professors Golestan Agricultural and Natural Resources Research and Education Center)
AbbasAli  Nourinia ³ (Assistant Professor of Golestan Agricultural and Natural Resources Research and Education Center)
Hoseein  Sabouri ⁴ (Associate Professor Department of Plant Production, Collage of Agriculture Science and Natural Resource Gonbad Kavous University)
Shahpour  Ebrahimnejad ⁵ (Mazandaran Agricultural and Natural Resources Research and Education Center)

Received: 2014-12-03 Accepted : 2015-02-26 Published : 2015-05-22

Keywords: triticale, genotype, grain filling duration, grain filling rate,

Abstract :

This study was conducted using 13 triticale genotypes: ET-79-3, ET-79-4, ET-79-17, ET-82-8, ET-82-15, ET-82-16, ET-83-20, ET-84-5, ET-84-8, ET-84-15, ET-85-7, ET-85-9, JUANILLO 92 in an RCBD with three replicates to determine the phenological and physiological traits affecting grain yield and related characteristics, in Agricultural Research Station of Gonbad in 2008-9. Data analysis of variance showed that there was a significant difference between genotypes for plant height, spike length, days to heading, days to physiological maturity, 1000 grain weight, spikes per square meter, number of grains per spike, number of fertile spikelet per spikes, harvest index, the average grain filling rate, and number of grains per square meter. But there was a significant difference between grain filling period, number of grains per fertile spikelet, straw yield and biological yield. ET-82-15 and Juanilo 92 genotypes produced the highest (6020 kg/ha) and the lowest (4422 kg/ha) grain yield, respectively. There was a significant and positive correlation between grain yield with biological yield, grain filling period, grain filling rate, 1000 grain weight and harvest index. Generally, ET-82-15 and ET-84-5 genotypes can be recommended for cultivation in Gonbad region and other similar semi-arid regions.

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