Micronutrients (Fe, Mn and Zn) concentration and remobilization in spring wheat organs during grain filling
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Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gaurav Publications
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The trials were conducted during 2008-09 and 2009-10 wheat growing seasons. Four wheat genotypes (Triticum aestivum L.) were grown in field conditions to study Fe, Mn and Zn content in different plant organs during the grain-filling period. Micronutrient contents of plant organs including lower stems, peduncle, lower leaves, flag leaf, rachis, florets and grain were measured at four stages between anthesis and physiological maturity. Analysis of variance showed high genotype and measurement stage effects for all plant organs. Fe contents in stems declined during grain filling, whereas it increased for rachis, florets and grain, and remained constant in leaves. Mn content of plant parts stayed generally constant until grain maturity, except in stems. Zn sharply decreased during grain filling for all plant parts, except grain. The micronutrients remobilization order from plant organs to grain was Zn<Fe<Mn and all nutrients were accepted as removable at grain development stages. The peduncle had the dominant contribution to remobilization for Zn and Mn. Fe remobilization to grain was supported mainly by leaves. Identification of the genotypes that have high remobilization capacity can be valuable to increase grain micronutrient content by foliar micronutrient applications. Relationships among micronutrients and their relationships with plant organs can be put to use via indirect selection in wheat breeding efforts.
Açıklama
Anahtar Kelimeler
Bread wheat, Grain, Grain filling, Micronutrients remobilization, Plant parts
Kaynak
Research on Crops
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
14
Sayı
4
