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Paper Information

Journal:   AGRICULTURAL SCIENCES AND TECHNOLOGY   2007 , Volume 21 , Number 2 (SPECIAL ISSUE IN HORTICULTURE SCIENCES); Page(s) 99 To 105.
 
Paper: 

APPLICATION OF ISOLATED PROTEIN AS A MARKER FOR DISTINCTION OF EARLY INCOMPATIBILITY OF PEAR CULTIVAR ON QUINCE A ROOTSTOCK

 
 
Author(s):  HASSANPOUR H., DAVARYNEJAD G.H.*
 
* FERDOWSI UNIVERSITY OF MASHHAD
 
Abstract: 
This research was conducted to investigate the distinction of early incompatibility, and to detect a polypeptide as a marker that would be associated with pear/quince compatibility/incompatibility.
Bark samples were collected from 3 year-old pear scions grafted on QA and pear seedling rootstocks (PS). For determination of total soluble protein contents the Bradford assay was used. Profile protein of bark tissues of 4 pear scions, Pass a Crassana (PC), Beurre Hardy (BH), Dargazi (D) and Bartlett (BT), were determined by using SDS-PAGE. The result showed that, the scions grafted on QA had greater total protein content than those on PS rootstock. The highest protein content was determined in BH/QA combination. However, no linear correlation was detected between total protein content and graft compatibility. In SDS-PAGE, the protein profiles of the scions were similar. However, a 63 KDa protein band determined in compatible pear scions (PC and BH) was faintly observed in an intermediate compatible scion CD), but was not detected in the incompatible scion (BT). In general the results indicated that this polypeptide could be used as a marker in determination of compatibility and the early distinction of incompatibility between pear cultivars on QA rootstock.
 
Keyword(s): GRAFT INCOMPATIBILITY, PEAR CULTIVAR, QUINCE A, PROTEIN, POLYPEPTIDE
 
References: 
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