Inheritance of time to flowering, time to physiological maturity and growth habit in soybeans grown at a tropical latitude

Buhr, K. L.

doi:10.31274/rtd-180815-4767

Cited by 4 publications

(6 citation statements)

References 33 publications

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“…The percentage of lines in the five populations with a seed size equal to the larger of the small‐seeded parents in the set ranged from 0 to 13%, with an average of 4%. In previous evaluations of segregation from small‐seeded × normal‐size crosses, the small‐seeded parent was an accession of G. soja with a seed size of ≈20 mg seed −1 , and the normal‐size parent was a G. max cultivar (Weber, 1950; Buhr, 1976; Carpenter and Fehr, 1986). None of the lines recovered in these three studies were equal in size to the G. soja parent in a cross.…”

Section: Resultsmentioning

confidence: 99%

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Genetic Variability for Seed Size of Two‐ and Three‐Parent Soybean Populations

et al. 2001

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Specialty soybean [Glycine max (L.) Merr.] cultivars with ≤ 80 mg seed−1 are needed to produce grain for export to Japan for the production of natto, a fermented food. The purpose of this study was to compare three population types for the recovery of lines that would have adequately small seed size for natto. Two small‐seeded and one normal‐size conventional cultivar or line were used to produce a small‐seeded × small‐seeded two‐parent population, a small‐seeded × normal‐size two‐parent population, and a small‐seeded × (small‐seeded × normal‐size) three‐parent population. Five sets of the three population types were developed with different parents in each set. The seed size of 100 random F2 plants was determined from each of the 15 populations and 10 plants of each parent. For each of the five sets, the progeny of the 100 F2 plants of each population type were compared as F2:3 lines with 10 entries of each of the three parents at two Iowa locations. The average percentage of lines with a seed size equal to or smaller than one of the parents in a cross was 90% for the small‐seeded × small‐seeded populations, 4% for the small‐seeded × normal‐size populations, and 20% for the three‐parent populations. An average of 10% of the lines from the small‐seeded × small‐seeded populations had significantly smaller seed size than either of the parents, and no transgressive segregation for small seed size was observed in the other two population types. For the development of small‐seeded cultivars, small‐seeded × small‐seeded and three‐parent populations would provide lines with acceptable seed size. A small‐seeded × normal‐size population may provide suitable lines if seed size of the conventional cultivar is sufficiently small and adequate resources are available to select for the limited number of small‐seeded segregates.

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Section: Resultsmentioning

confidence: 99%

“…& Zucc. that have ≈20 mg seed −1 and conventional cultivars of G. max (Weber, 1950; Buhr, 1976; Carpenter and Fehr, 1986). In all of the studies, none of the lines derived from the populations had a seed size as small as the G. soja parent.…”

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Genetic Variability for Seed Size of Two‐ and Three‐Parent Soybean Populations

et al. 2001

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“…They concluded that genetic variability for seed size was primarily additive. Buhr (1976) developed one population by crossing a G. mar cultivar Hill' (198 mg seed" 1 ) with a G. soja strain P1245331 (7 mg seed" 1 ) and a second population by crossing the G. max cultivar Hardee' (218 mg seed" 1 ) with a G. max strain PI2276787 (66 mg seed" 1 ). The seed size of the F2:3 lines ranged from 28 to 72 mg seed" 1 for the first population and from 96 to 171 mg seed '…”

Section: Inheritance Of Seed Sizementioning

confidence: 99%

“…The failure to recover lines with seed sizes similar to the parents was consistent with segregation reported for other small-seeded x normal-size soybean crosses (Weber. 1950;Buhr, 1976: Carpenter and Fehr. 1986: Johnson et al, 2001 ).…”

Section: (2000)mentioning

confidence: 99%

Molecular Marker Analysis of Seed Size in Soybean

et al. 2003

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, "Molecular marker analysis of seed size in soybean " (2002). Retrospective Theses and Dissertations. 378. http://lib.dr.iastate.edu/rtd/378 INFORMATION TO USERSThis manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps.

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“…Normal cultivars may be a useful source of genes for the improvement of yield and other agronomic characteristics of LSHP cultivars. However, available literature indicates that it may be difficult to obtain segregates with seed weight similar to the larger parent in a cross involving a parent with conventional seed size (Weber, 1950;Buhr, 1976;Bravo et al, 1981). Bravo et al (1981) reported that selecting normal parents that have the largest seed weight would enhance the recovery of large-seeded segregates from single crosses with a large-seeded parent.…”

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Genetic variability for seed size of two-parent and three-parent soybean populations

Johnson¹

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Inheritance of time to flowering, time to physiological maturity and growth habit in soybeans grown at a tropical latitude

Cited by 4 publications

References 33 publications

Genetic Variability for Seed Size of Two‐ and Three‐Parent Soybean Populations

Genetic Variability for Seed Size of Two‐ and Three‐Parent Soybean Populations

Molecular Marker Analysis of Seed Size in Soybean

Genetic variability for seed size of two-parent and three-parent soybean populations

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