International Database for Barley Genes and Barley Genetic Stocks
BGS 125, Lazy dwarf 1, lzd1
Stock number: BGS 125
Locus name: Lazy dwarf 1
Locus symbol: lzd1
Previous nomenclature and gene symbolization:
Dwarf 4 = dw4 (3).
Inheritance:
Monofactorial recessive (4, 6).
Located in chromosome 3H (5, 6); lzd1.a is over 16.3 cM distal from the alm1 (albino lemma 1) locus (5, 6); lzd1.a is associated with SNP markers 2_0356 to 2_1120 (positions 72.36 to 98.41 cM) in 3H bins 05 to 06 of the Bowman backcross-derived line BW499 (1).
Located in chromosome 3H (5, 6); lzd1.a is over 16.3 cM distal from the alm1 (albino lemma 1) locus (5, 6); lzd1.a is associated with SNP markers 2_0356 to 2_1120 (positions 72.36 to 98.41 cM) in 3H bins 05 to 06 of the Bowman backcross-derived line BW499 (1).
Description:
Plants have a very procumbent growth habit prior to the boot stage. Plants are 3/4 normal height, maturity is delayed, and seedlings are very responsive to gibberellic acid (4, 6). Leaf blades of the Bowman backcross-derived line for lzd1.a, BW499, were about 2/3 the length of those of Bowman. BW499 plants headed 3 to 4 days later than Bowman under long days, but up to 10 days later under short-day conditions (2). The spike of BW499 often had 2 to 3 more kernels than Bowman, plants were 5 to 10% shorter, and kernels had slight smaller dimensions and weighed about 10% less, 5.0 vs. 5.6 mg. The grain yields of BW499 were 2/3 to 3/4 those of Bowman (2).
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Origin of mutant:
An ethyl methanesulfonate induced mutant in Akashinriki (OUJ659, PI 467400) (3).
Mutational events:
lzd1.a (OUM005, GSHO 1787) in Akashinriki (OUJ659, PI 467400) (4, 6).
Mutant used for description and seed stocks:
lzd1.a (GSHO 1787) in Akashinriki; lzd1.a in Bowman (PI 483237)*8 (GSHO 1938, BW499, NGB 20727).
References:
1. Druka, A., J. Franckowiak, U. Lundqvist, N. Bonar, J. Alexander, K. Houston, S. Radovic, F. Shahinnia, V. Vendramin, M. Morgante, N. Stein, and R. Waugh. 2011. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.
2. Franckowiak, J.D. (Unpublished).
3. Konishi, T. 1970. Studies on EMS-induced mutation in barley III. Nogaku Kenkyu 53:141-152.
4. Konishi, T. 1975. Characteristics and inheritance of EMS-induced mutants in barley. Nogaku Kenkyu 55:53-56.
5. Konishi, T., J. Hayashi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VII. Location of six new mutant genes on chromosome 3. Ber. Ohara Inst. landw. Biol., Okayama Univ. 18:251-264.
6. Takahashi, R., J. Hayashi, T. Konishi, and I. Moriya. 1975. Linkage analysis of barley mutants. Barley Genet. Newsl. 5:56-60.
2. Franckowiak, J.D. (Unpublished).
3. Konishi, T. 1970. Studies on EMS-induced mutation in barley III. Nogaku Kenkyu 53:141-152.
4. Konishi, T. 1975. Characteristics and inheritance of EMS-induced mutants in barley. Nogaku Kenkyu 55:53-56.
5. Konishi, T., J. Hayashi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VII. Location of six new mutant genes on chromosome 3. Ber. Ohara Inst. landw. Biol., Okayama Univ. 18:251-264.
6. Takahashi, R., J. Hayashi, T. Konishi, and I. Moriya. 1975. Linkage analysis of barley mutants. Barley Genet. Newsl. 5:56-60.
Prepared:
T. Konishi and J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:161.
Revised:
J.D. Franckowiak. Barley Genet. Newsl. 43:87.
