Effects of mass selection for ear length in maize

“…Within 100 plots of 40 plants per plot, three ears were selected, equal quantities of seed from the three selected ears were bulked, and the bulk used for the next cycle of selection. Effectiveness of mass selection for divergent ear length was monitored after 10 (Cortez‐Mendoza and Hallauer, 1979), 15 (Salazar and Hallauer, 1986), and 27 (Lopez‐Mendoza and Hallauer, 1998; Hallauer et al, 2004) cycles of selection.…”

mentioning

confidence: 99%

Registration of BSLE(M‐S)C30 and BSLE(M‐L)C30 Maize Germplasm

Hallauer

2005

Crop Science

View full text Add to dashboard Cite

Maize Germplasm tion for increased ear length. BSLE(M-S)C30 (Reg. no. GP-401, PI 636503) and BSLE(M-S)C30 and BSLE(M-L)C30 are significantly differ-BSLE(M-L)C30 (Reg. no. GP-402, PI 636502) are maize (Zea ent from each other for ear length and other plant and ear traits, mays L.) populations developed after 30 cycles of divergent and both populations are significantly different from BSLE, the mass selection for ear length by the Iowa Agriculture and original population, for all traits except for grain yield of BSLE Home Economics Experiment Station. Both populations origiand BSLE(M-L)C27 (Lopez-Mendoza and Hallauer, 1998). nated from Iowa Long Ear Synthetic (BSLE), which was de-Phenotypically, BSLE(M-S)C30 has more desirable plant veloped by intermating 12 inbred lines with above-average and ear types than either BSLE and BSLE(M-L)C30, but ear length (Russell et al., 1971). The grid system of mass yield of BSLE(M-S)C30 is about 50% less than BSLE and selection for shorter and longer ear length was used for each BSLE(L-S)C30. BSLE(M-S)C30 and BSLE(M-L)C30 are geof the 30 cycles of selection (Gardner, 1961). After the initial netically unique populations for relative ear length, but both cycle of selection, two isolation fields (a minimum of 200 m populations have limited value in maize breeding programs. from other maize) were used, one for selection for shorter Relative maturity of BSLE(M-S)C30 is AES700 and relative ears and the second for selection for longer ears. Within 100 maturity of BSLE(M-L)C30 is AES800. plots of 40 plants per plot, three ears were selected, equal Breeder seed of BSLE(M-S)C30 and BSLE(M-L)C30 is mainquantities of seed from the three selected ears were bulked, tained by the Iowa Agriculture and Home Economics Experiand the bulk used for the next cycle of selection. Effectiveness ment Station. Seed (500 seeds per request) of BSLE(M-S)C30 of mass selection for divergent ear length was monitored after and BSLE(M-L)C30 can be obtained from Mark Millard at the 10 (Cortez-Mendoza and Hallauer, 1979), 15 (Salazar and Plant Introduction Station, Ames, IA 500111. Hallauer, 1986), and 27 (Lopez-Mendoza and Hallauer, 1998; A.R. Hallauer* Hallauer et al., 2004) cycles of selection. BSLE(M-S)C30 is a strain of BSLE developed after 30 cycles of mass selection for reduced ear length. Average ear

show abstract

Effects of mass selection for ear length in maize

Cited by 2 publications

References 59 publications

Molecular marker-facilitated studies of morphological traits in maize

Molecular marker-facilitated studies of morphological traits in maize

Registration of BSLE(M‐S)C30 and BSLE(M‐L)C30 Maize Germplasm

Contact Info

Product

Resources

About