Registration of B101 Maize Germplasm

Hallauer, Arnel R.; Wright, Allen D.

doi:10.2135/cropsci1995.0011183x003500040104x

Cited by 10 publications

(9 citation statements)

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“…Samples were analyzed in 96‐well plates using a Randomized Complete Block Design including two checks (B101 and B45o2), and six standards consisting of known concentrations of commercially prepared amino acids. The B101 inbred was chosen as a check for its exceptionally high levels of methionine (Hallauer and Wright, 1995). The B45o2 inbred, an opaque‐2 mutant, was used as a check for high tryptophan.…”

Section: Methodsmentioning

confidence: 99%

Recurrent Selection to Alter Grain Methionine Concentration and Improve Nutritional Value of Maize

et al. 2008

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Methionine is an essential amino acid that is limiting in maize-(Zea mays L.) based diets. The objective of this work was to determine whether we could alter grain methionine concentration in random-mated maize populations by mass selection for methionine concentration using a microbial assay. In one study, we developed two populations by selecting for high or low methionine concentration (HM or LM, respectively) for three generations starting from the randommated population BS11. Grain from these populations was used to formulate diets for a feeding trial in which 15 rats were fed HM grain and 15 rats were fed LM grain. Rats on the HM diet had a 0.018 higher feed effi ciency (g gain/g feed) than rats on the LM diet. In a second study, we performed three cycles of selection for high or low methionine concentration starting with two random-mated populations, BS11 and BS31. We evaluated each cycle of selection in a fi eld trial with two replications in each of two years. Methionine concentration was signifi cantly correlated with the cycle of selection, changing on average 0.004 g methionine/100 g grain per cycle. Kernel mass, %N, oil, protein, starch, tryptophan, and lysine concentration did not exhibit signifi cant correlations with cycle of selection. We conclude that recurrent selection for grain methionine concentration using a microbial assay is an effective method to alter methionine content.

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Section: Methodsmentioning

confidence: 99%

Recurrent Selection to Alter Grain Methionine Concentration and Improve Nutritional Value of Maize

et al. 2008

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“…BSSS53, a random line isolate from Iowa Stiff Stalk Synthetic (Hallauer and Wright, 1995), was identified by a laboratory whole‐kernel screening assay searching for lines resistant to feedback inhibition by lysine‐plus‐threonine–supplemented tissue culture medium (Green and Phillips, 1974; Phillips et al, 1981). A lysine‐plus‐threonine resistant line, BSSS53, was discovered.…”

Section: Methodsmentioning

confidence: 99%

Registration of High‐Methionine Versions of Maize Inbreds A632, B73, and Mo17

Phillips

Suresh

Olsen

et al. 2008

J of Plant Registrations

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Maize (Zea mays L.) is a primary energy-supplying grain for animal feed in the United States. However, it is defi cient in the essential amino acid methionine. Of the maize used for animal feed, 20% is fed to poultry, where the methionine requirement is particularly important. Signifi cant increases in maize methionine levels in the lines reported here can be effectively used in poultry nutrition as well as in human diets where corn and bean (Phaseolus L.) play a major role. Eleven inbred lines of high-methionine maize (58611 Inbred A632 [Reg. No. GP-557, PI 648423], 58609 A632 (Meth) BC5S4 [Reg. No. GP-558, PI 648424], 58610 A632 (Meth) BC5S4 [Reg. No. GP-559, PI 648425], 58612 Inbred B73 [Reg. No. GP-560, PI 648426], 58613 B73 (Meth) BC5S4 [Reg. No. GP-561, PI 648427], 58614 B73 (Meth) BC5S4 [Reg. No. GP-562, PI 648428], 58615 B73 (Meth) BC5S4 [Reg. No. GP-563, PI 648429], 58801 Inbred Mo17 [Reg. No. GP-564, PI 648430], 58802 Mo17 (Meth) BCS3 [Reg. No. GP-565, PI 648431], 58803 Mo17 (Meth) BCS3 [Reg. No. GP-566, PI 648432], and 58804 Mo17 (Meth) BCS3 [Reg. No. GP-567, PI 648433]) were developed by the University of Minnesota and released on 26 Oct. 2007 by the Minnesota Agricultural Experimental Station.These materials were produced by crossing BSSS53 with inbred lines A632, B73, and Mo17 and backcrossing to the respective inbred with intermittent selfi ng. Maize inbred lines A632, B73, and Mo17 are released with methionine elevated as much as 12.5, 25.0, and 50.0%, respectively, above the recurrent parent. The germplasm source of the high methionine trait is a random line isolate from the Iowa Stiff Stalk Synthetic, identifi ed as BSSS53 and later released by the Iowa State Experiment Station as B101 after obtaining the high methionine information from the University of Minnesota.

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“…The first is exemplified in the inbred line B101, which was developed from the Iowa stiff stalk synthetic population (Hallauer and Wright, 1995). The methionine concentration of this line was reported to exceed related inbred lines by 20% (Phillips et al, 1981).…”

Section: P Oultry Diets Based On Corn and Soybean [Glycine Max (L)mentioning

confidence: 99%

Interaction of Genetic Mechanisms Regulating Methionine Concentration in Maize Grain

et al. 2016

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Methionine is a limiting amino acid in poultry diets, so methionine supplementation is typically required to meet nutritional demands. Maize (Zea mays L.) varieties with increased methionine levels have been developed using three different approaches: (i) increased levels of the methionine‐rich 10‐kDa zein, (ii) disruption of protein deposition using the floury‐2 allele, and (iii) recurrent selection. The goal of this study was to characterize the interactions of these three mechanisms for increasing methionine to develop optimal breeding strategies for this limiting amino acid. A complete diallel mating design was used to produce all possible hybrid combinations, which were analyzed by Griffing's experimental Method 3, Model 1. Grain samples were analyzed for methionine concentration using a microbial method. The significantly negative general combining ability (GCA) for inbred RS2 suggests it did not perform well in hybrid combination, while the significant specific combining abilities (SCAs) suggest that some specific combinations of mechanisms worked well together in this germplasm. Analysis of grain quality traits by near‐infrared spectroscopy (NIRS) revealed that the high‐methionine hybrid combinations had starch and oil concentrations similar to all other hybrids but had elevated protein concentrations. In some hybrids in this study, dzr1 and recurrent selection were effective mechanisms to elevate methionine in hybrid combination and did not have an associated yield penalty relative to other hybrids produced in the study, which supports their use in a high‐methionine maize breeding program.

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Registration of B101 Maize Germplasm

Cited by 10 publications

References 0 publications

Recurrent Selection to Alter Grain Methionine Concentration and Improve Nutritional Value of Maize

Recurrent Selection to Alter Grain Methionine Concentration and Improve Nutritional Value of Maize

Registration of High‐Methionine Versions of Maize Inbreds A632, B73, and Mo17

Interaction of Genetic Mechanisms Regulating Methionine Concentration in Maize Grain

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