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- 저자 : Vosoghi Rad Mehdi (검색결과 1 건)
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Vosoghi Rad Mehdi,Jami Moeini Matin,Taherian Majid,Armin Mohammad 한국작물학회 2022 Journal of crop science and biotechnology Vol.25 No.2
The present research was conducted to examine the accumulation and remobilization of some promising lines of durum wheat assimilates using a randomized complete block design. In this regard, two experimental groups of stress and normal (no stress) with three replications were compared during two crop years. The analysis of the results included measuring the accumulation and remobilization rates of assimilates using the weighting method as well as investigating the relationship between internode characteristics (length and specifc weight) and dry matter accumulation. The obtained results were indicative of a signifcant diference among various genotypes considering the contribution of diferent internodes to the stem length under normal and stress conditions. In all genotypes, the peduncle internode had the largest contribution to the stem height. Under both conditions, the lower internodes had the highest remobilization as well as dry and specifc weights. The highest rate of remobilization from the lower internodes was detected in G2 genotype under normal and G7, G18, and G6 genotypes under stress conditions. Moreover, the highest remobilization efciency from the lower internodes was observed in G7 and G18 genotypes under stress conditions. The obtained results were indicative of two diferent mechanisms of storage capacity and remobilization ability. As observed, the G14 line was one of the genotypes that revealed the highest specifc weight of peduncle while the rate of remobilization was the lowest in response to stress conditions. The highest rates for the specifc weight of the lower internodes with the lowest rates of remobilization were observed in G4 and G8 lines. According to the results, the wide variation for the accumulation and remobilization of assimilates among the durum wheat genotypes can pave the way for possible trait changes in breeding programs.
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