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Genetic analysis of falling number in three bi‐parental common winter wheat populations
Author(s) -
Mohler Volker,
Albrecht Theresa,
Mrva Kolumbina,
Schweizer Günther,
Hartl Lorenz
Publication year - 2014
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12177
Subject(s) - falling number , biology , quantitative trait locus , germplasm , population , genetics , locus (genetics) , preharvest , dwarfing , agronomy , horticulture , gene , cultivar , postharvest , demography , sociology
The objective of the present study was to analyse the genetic basis of falling number in three winter wheat populations. Samples for falling number determination for each population originated from at least three test environments that were free from the occurrence of preharvest sprouting at harvest time. Quantitative trait locus ( QTL ) analysis employing falling number values from single environments identified eight, five and three QTL in the populations D ream/ L ynx, B ussard/ W 332‐84 and BAUB 469511/ F ormat, respectively. A major QTL common to all three populations and consistently detected in each environment mapped to the long arm of chromosome 7 B . The QTL was located to a similar genomic region as the previously described major QTL for high‐isoelectric point α ‐amylase content. The T 1 BL .1 RS wheat‐rye translocation and the dwarfing gene R ht‐ D 1 segregating in D ream/ L ynx and BAUB 469511/ F ormat were found to be important factors of falling number variation. In both populations, the presence of R ht‐ D 1b or the absence of T 1 BL .1 RS increased falling number. The results indicate that late maturity α ‐amylase, responsible for low falling numbers, has now been documented in G erman wheat germplasm.