Embryo Mortality in Relation to Seed Formation in Alfalfa (Medicago sativa)

Cooper, D. C.; Brink, R. A.; Albrecht, Harald

doi:10.2307/2436406

Cited by 21 publications

(16 citation statements)

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“…Glyma.02G232900, Glyma.02G256000, Glyma.02G258100 and Glyma.19G184300 were annotated in the biological process of embryo development ending in seed dormancy (GO: 0009793) and embryo sac development (GO: 0009553), which were involved in the process of pod and seed development. Cooper, Brink, and Albrecht () deemed embryo mortality was relation to seed formation in Alfalfa. Kurdyukov et al.…”

Section: Resultsmentioning

confidence: 99%

Identification and validation of number of pod ‐ and seed ‐ related traits QTLs in soybean

Zou

Jiang

et al. 2018

Plant Breeding

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Traits related to the number of pods and seeds are important yield factors on soybean. The relationships between phenotype and quantitative trait loci (QTLs) of these traits may reveal the mechanisms underlying productivity. Our study objectives were to analyse phenotypic correlations, detect stable QTLs and identify candidate genes useful for marker‐assisted selection. Phenotypic analyses revealed that NThSP (number of three‐seeded pods) was positively correlated with NPPP (number of pods per plant) and SNPP (number of seeds per plant). Seventy‐five QTLs were identified based on the mean phenotypic data for at least 2 years. We detected two to 15 and one to three significant QTLs identified at the same location, respectively. Six consensus QTLs associated with at least two NPS‐related (number of pods and seeds related) traits were identified. Two of these were verified in another population. The QTLs for NPPP, SNPP and NThSP formed a consensus QTL cluster on GM02. Another 27 QTLs also formed clusters in five regions. Fifteen candidate genes were mined and discussed. The results will provide more information to soybean breeding.

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Section: Resultsmentioning

confidence: 99%

Identification and validation of number of pod ‐ and seed ‐ related traits QTLs in soybean

Zou

Jiang

et al. 2018

Plant Breeding

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“…Conceivably, they could develop further after pollination and be receptive by the time pollen tubes arrive approximately 24 h after collections were made in this study (Cooper 1935;our data, not shown). Alternatively, the presence of young, unreceptive eggs in mature flowers could be a factor leading to the high rate of ovule abortion in alfalfa (Cooper et al 1937;Sayers and Murphy 1966;Dane and Melton 1973). PostpoUination and postfertilization studies are needed to answer these questions.…”

Section: Discussionmentioning

confidence: 99%

Quantitative, three-dimensional analysis of alfalfa egg cells in two genotypes: Implications for biparental plastid inheritance

Zhu

Mogensen

Smith

1993

Planta

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Abstract.In alfalfa (Medicago sativa L.), plastids are inherited biparentally. Patterns of plastid transmission vary according to the genotypes involved, but there is a strong bias in favor of male plastid transmission. Previous cytological studies on the male gametophyte of this species have not provided an adequate explanation for the differences in plastid transmission frequencies among genotypes. In the present study, we compared egg cells from genotypes classified as strong or weak plastid transmitters to determine whether plastid transmission strength is correlated with egg cell structure before fertilization. We found that plastids in the mature egg cells of the strong female (genotype 6-4) are significantly larger than in mature eggs of the weak female (genotype CUF-B), and that significantly more plastids are positioned in the apical portion of the mature egg cell of genotype 6-4 than in CUF-B. Immature eggs in the two genotypes show the same pattern as mature eggs with regard to plastid number and polarization. Since only the apical portion of the egg cell/zygote gives rise to the functional embryo, these results indicate that the potential input of female plastids, in terms of plastid size and number, may be an important factor in determining the inheritance patterns of these organelles in alfalfa.

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“…Cooper et al (1937) in a study of the effects of selfpollination on fertility concluded that the failure of tripped flowers to set seed was due to: (1) failure of pollen tubes to reach all ovules ; (2) lack of fertilization even though pollen tubes were present; and (3) embryo abortion. Cooper and Brink (1940) found crossing raised the proportion of ovules becoming fertile from 15 to 66 percent, and reduced the abortion of fertile ovules from 3^ to 7 percent.…”

Section: Discussionmentioning

confidence: 99%

“…Cooper et al (1937) found that while there are 3.1 ovules per flower in high seed-setting group, only 1.25 seeds per flower developed to maturity. In the low seed-setting group, the number of ovules was 2.5 but only 0.0?…”

Section: Review Op Literaturementioning

confidence: 91%

“…San dal (1946) found 0.15 seeds and 1.25 seeds per flower, re spectively, for low and high-fertility groups of clonal lines. Cooper et al (1937) Variability in self-and cross-fertility in alfalfa is partially due to genetic diversity, but additionally, such things as tripping process; pollen viability, abortion, and male sterility; ovules per ovary, incompatibility, and somatoplastic sterility have bearing on alfalfa plants pro ducing seed.…”

Section: Review Op Literaturementioning

confidence: 99%

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Recurrent Selection for High Self‐Fertility in Vernal Alfalfa (Medicago Sativa L.)

1971

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Embryo Mortality in Relation to Seed Formation in Alfalfa (Medicago sativa)

Cited by 21 publications

References 0 publications

Identification and validation of number of pod ‐ and seed ‐ related traits QTLs in soybean

Identification and validation of number of pod ‐ and seed ‐ related traits QTLs in soybean

Quantitative, three-dimensional analysis of alfalfa egg cells in two genotypes: Implications for biparental plastid inheritance

Recurrent Selection for High Self‐Fertility in Vernal Alfalfa (Medicago Sativa L.)

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