TY - JOUR
T1 - Reduced height alleles (Rht) and Hagberg falling number of wheat
AU - Gooding, Michael
AU - Uppal, R. K.
AU - Addisu, M.
AU - Harris, K. D.
AU - Uauy, C.
AU - Simmonds, J. R.
AU - Murdoch, A. J.
N1 - Gooding, M., Uppal, R. K., Addisu, M., Harris, K. D., Uauy, C., Simmonds, J. R., Murdoch, A. J. (2012). Reduced height alleles (Rht) and Hagberg falling number of wheat. Journal of Cereal Science, 55 (3), 305-311
PY - 2012/5/1
Y1 - 2012/5/1
N2 - Near-isogenic lines varying for alleles for reduced height (Rht) and photoperiod insensitivity (Ppd-D1) in cv. Mercia (2005/6–2010/11; rht (tall), Rht-B1b, Rht-D1b, Rht-B1c, Rht8c+Ppd-D1a, Rht-D1c, Rht12) and cvs Maris Huntsman and Maris Widgeon (2007/8–2010/11; rht (tall), Rht-B1b, Rht-D1b, Rht-B1c, Rht-B1b+Rht-D1b, Rht-D1b+Rht-B1c) were compared at one field site, but within different systems (‘organic’, O, 2005/6–2007/8 v. ‘intensive’, I, 2005/6–2010/11). Further experiments at the site (2006/7–2008/9) compared 64 lines of a doubled-haploid (DH) population [Savannah (Rht-D1b) × Renesansa (Rht-8c+Ppd-D1a)]. Gibberellin (GA) insensitive dwarfing alleles (Rht-B1b; Rht-B1c; Rht-D1b; Rht-D1c) could reduce α-amylase activity and/or increase Hagberg falling number (HFN) but effects depended greatly on system, background and season. Only Rht-B1c increased grain dormancy despite producing plants taller than Rht-D1c. The GA-sensitive Rht8c+Ppd-D1a in Mercia was associated with reduced HFN but analysis of the DH population suggested this was more closely linked with Ppd-D1a, rather than Rht8c. The GA-sensitive severe-dwarfing allele Rht12 was associated with reduced HFN. Instability in HFN over season tended to increase with degree of dwarfing. There was a negative association between mean grain weight and HFN that was in addition to effects of Rht and Ppd-D1 allele.
AB - Near-isogenic lines varying for alleles for reduced height (Rht) and photoperiod insensitivity (Ppd-D1) in cv. Mercia (2005/6–2010/11; rht (tall), Rht-B1b, Rht-D1b, Rht-B1c, Rht8c+Ppd-D1a, Rht-D1c, Rht12) and cvs Maris Huntsman and Maris Widgeon (2007/8–2010/11; rht (tall), Rht-B1b, Rht-D1b, Rht-B1c, Rht-B1b+Rht-D1b, Rht-D1b+Rht-B1c) were compared at one field site, but within different systems (‘organic’, O, 2005/6–2007/8 v. ‘intensive’, I, 2005/6–2010/11). Further experiments at the site (2006/7–2008/9) compared 64 lines of a doubled-haploid (DH) population [Savannah (Rht-D1b) × Renesansa (Rht-8c+Ppd-D1a)]. Gibberellin (GA) insensitive dwarfing alleles (Rht-B1b; Rht-B1c; Rht-D1b; Rht-D1c) could reduce α-amylase activity and/or increase Hagberg falling number (HFN) but effects depended greatly on system, background and season. Only Rht-B1c increased grain dormancy despite producing plants taller than Rht-D1c. The GA-sensitive Rht8c+Ppd-D1a in Mercia was associated with reduced HFN but analysis of the DH population suggested this was more closely linked with Ppd-D1a, rather than Rht8c. The GA-sensitive severe-dwarfing allele Rht12 was associated with reduced HFN. Instability in HFN over season tended to increase with degree of dwarfing. There was a negative association between mean grain weight and HFN that was in addition to effects of Rht and Ppd-D1 allele.
KW - Rht
KW - wheat
KW - Hagberg falling number
KW - Ppd
UR - http://hdl.handle.net/2160/35499
U2 - 10.1016/j.jcs.2012.01.003
DO - 10.1016/j.jcs.2012.01.003
M3 - Article
SN - 0733-5210
VL - 55
SP - 305
EP - 311
JO - Journal of Cereal Science
JF - Journal of Cereal Science
IS - 3
ER -