Introgression of Genes for Small Seed Size from Glycine soja into G. max

Crop Science ◽  
1991 ◽  
Vol 31 (3) ◽  
pp. 693-697 ◽  
Author(s):  
A. R. LeRoy ◽  
W. R. Fehr ◽  
S. R. Cianzio
Keyword(s):  
Seed Size ◽  
Glycine Soja ◽  
Small Seed

Seed size as a determinant of germination rate in Crepis tectorum (Asteraceae): evidence from a seed burial experiment

1996 ◽  
Vol 74 (4) ◽  
pp. 568-572 ◽  
Author(s):  
Stefan Andersson
Keyword(s):  
Seed Size ◽  
Germination Rate ◽  
Local Population ◽  
Seed Viability ◽  
Seed Burial ◽  
Small Seed ◽  
Crepis Tectorum ◽  
Winter Annual ◽  
Selection For ◽  
The Relationship

The present study of the winter annual Crepis tectorum examines the relationship between seed (achene) size and the extent to which seeds resist germination during the year of their production. I carried out two seed burial experiments, one at an outcrop site occupied by a small-seeded population, and another in an experimental garden with soil from the same field site, with seeds representing the local population and a segregating generation of a cross between two other populations. Using logistic regression with data corrected for seed viability, I found an association between small seed size and failure to germinate in the first autumn. The small seed size characterizing many outcrop populations may have evolved as a response to selection for delaying germination in a habitat subject to unpredictable droughts during the growth season. Keywords: Crepis tectorum, germination, seed bank, seed size.

Susceptibility of mungbean varieties to the bruchid species Callosobruchus maculatus (F.), C. phaseoli (Gyll.), C. chinensis (L.), and Acanthoscelides obtectus (Say.) (Coleoptera:Chrysomelidae)

2000 ◽  
Vol 51 (1) ◽  
pp. 85 ◽  
Author(s):  
C. J. Lambrides ◽  
B. C. Imrie
Keyword(s):  
Seed Size ◽  
Seed Coat ◽  
Callosobruchus Maculatus ◽  
Acanthoscelides Obtectus ◽  
Oviposition Deterrents ◽  
Bruchid Resistance ◽  
Small Seed ◽  
Biochemical Resistance ◽  
Acanthoscelides Obtectus Say

Twenty-six mungbean varieties and accessions were screened for resistance to 4 bruchid species (Coleoptera : Chrysomelidae). On the basis of the percentage of seeds damaged all Australian commercial mungbean varieties tested here were highly susceptible to strains of Callosobruchus maculatus and C. chinensis, the 2 species that cause most damage worldwide to mungbean in storage. In addition, 3 accessions of wild mungbean appeared to have bruchid resistance. The texture layer present on the seed coat of some mungbean varieties and small seed size may act as oviposition deterrents. Consequently, these assays for determining resistance to bruchid infestation may not be suitable for identifying biochemical resistance of some mungbean genotypes.

Dormancy, small seed size and low germination rates contribute to low recruitment in Desmodium cuspidatum (Fabaceae)

2010 ◽  
Vol 137 (4) ◽  
pp. 355-365 ◽  
Author(s):  
Krissa A. Skogen ◽  
Logan Senack ◽  
Kent E. Holsinger
Keyword(s):  
Seed Size ◽  
Small Seed

Size doesn’t matter: The effects of seed size and seeding rate on injury by root maggots (Delia spp., Diptera: Anthomyiidae) to canola (Brassica rapa L. and B. napus L.)

2006 ◽  
Vol 86 (3) ◽  
pp. 907-909 ◽  
Author(s):  
J. J. Soroka ◽  
R. H. Elliott
Keyword(s):  
Key Words ◽  
Seed Size ◽  
Brassica Rapa ◽  
Root Diameter ◽  
Seeding Rate ◽  
Small Seed ◽  
Root Maggot

In 16 experiments at two locations over six years, seed size had no effect on feeding levels by crucifer-feeding root maggots (Delia spp.) in Brassica rapa nor in B. napus. Root maggot injury in B. rapa declined as seeding rates increased. Damage to plants grown from small seed increased as root diameter increased. Key words: Canola, Delia spp., root maggot injury, seeding rate, seed size, root diameter

EFFECTS OF SEED SIZE ON GERMINATION OF CORN (ZEA MAYS) UNDER SIMULATED WATER STRESS CONDITIONS

1977 ◽  
Vol 57 (3) ◽  
pp. 921-923 ◽  
Author(s):  
S. C. MUCHENA ◽  
C. O. GROGAN
Keyword(s):  
Zea Mays ◽  
Water Stress ◽  
Seed Size ◽  
Zea Mays L ◽  
Stress Conditions ◽  
Small Seed

Three strains of corn (Zea mays L.), White Cloud popcorn cultivar, inbred R181, and inbred Ay499, were used to determine the importance of seed size on the ability of seeds to germinate under differing mannitol concentrations. Significant differences among seed size categories were obtained. The small seed size was best.

scholarly journals Pengaruh Variasi Ukuran Biji Terhadap Perkecambahan Acacia Fauntleroyi (Maiden) Maiden and Blakely

2009 ◽  
Vol 14 (2) ◽  
pp. 153-160
Author(s):  
Mangadas Lumban Gaol ◽  
J.E.D. Fox
Keyword(s):  
Seed Size ◽  
Seed Coat ◽  
Temperature Regime ◽  
Incubation Temperature ◽  
Treatment Temperature ◽  
Size Classes ◽  
Large Seed ◽  
Small Seed ◽  
Pre Treatment ◽  
Seed Coats

The aim of this study was to investigate to what extent are germination of A. fauntleroyi affected by seed size. Does pre-treatment improve germination? Under what temperature regime does most seed germinate? Three seed size classes (small, medium and large) were chosen. Seeds were pre-treatments either at ambient, 50°C, 75°C or 100°C and incubated at 15°C or 30°C. Then, number of seed that germinate and speed of germination were measure. Five seeds representing each of small, medium and large seed sizes were also selected and the seed coat thickness measured. Seed size, pre-treatment temperature and incubation temperature all affected the number of seed that germinated. Pre-treatment temperature affected germination more than incubation temperature. Incubation temperature affected germination more than seed size. The interaction of seed size and pre-treatment temperature was stronger than that between seed size and incubation temperature. Small seeds produce less germination than medium or large seeds, however small seed germinated sooner. Seed coat thickness varied among seed sizes. Thinner seed coats occur in smaller than larger seeds.

Using presence/absence variation markers to identify the QTL/allele system that confers the small seed trait in wild soybean (Glycine soja Sieb. & Zucc.)

Euphytica ◽  
2015 ◽  
Vol 208 (1) ◽  
pp. 101-111 ◽  
Author(s):  
Wubin Wang ◽  
Xuliang Li ◽  
Shixuan Chen ◽  
Shiyu Song ◽  
Junyi Gai ◽  
...  
Keyword(s):  
Glycine Soja ◽  
Wild Soybean ◽  
Seed Trait ◽  
Small Seed

Resistance to Sclerotinia Blight and Early Leafspot in Chinese Peanut Germplasm1

1992 ◽  
Vol 19 (1) ◽  
pp. 41-43 ◽  
Author(s):  
D. M. Porter ◽  
T. A. Coffelt ◽  
F. S. Wright ◽  
R. W. Mozingo
Keyword(s):  
Seed Size ◽  
Pathogen Resistance ◽  
Causal Agent ◽  
Cercospora Arachidicola ◽  
Plant Introductions ◽  
Sclerotinia Blight ◽  
Arachis Hypogaea L ◽  
Small Seed ◽  
Chinese Plant ◽  
Testa Color

Abstract Sclerotinia minor, causal agent of Sclerotinia blight, and Cercospora arachidicola, causal agent of early leafspot, are two of the most important pathogens of peanut (Arachis hypogaea L.) in Virginia and North Carolina. Twenty-two Chinese peanut germplasm lines were screened to identify resistance to these two pathogens, and evaluated for agronomic characteristics including seed size, testa color, and pod yield. Germplasm lines with PI numbers 476824 and 476843 exhibited more resistance to S. minor than other Chinese plant introductions, or the U.S. cultivars Florigiant and VA 81B. PI 476823 and PI 476837 were most resistant to C. arachidicola. Resistance to one pathogen was often associated with high levels of susceptibility to the other pathogen. Resistance to S. minor was also associated with undesirable characteristics for large-seeded virginia-type peanuts such as tan testa color and small seed size.

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