Effect of pollen competition and stigmatic receptivity on seed set in white clover (Trifolium repens L.)

2000 ◽  
Vol 13 (1) ◽  
pp. 37-42 ◽  
Author(s):  
A. A. Cowan ◽  
A. H. Marshall ◽  
T. P. T. Michaelson-Yeates
Keyword(s):  
White Clover ◽  
Trifolium Repens ◽  
Seed Set ◽  
Pollen Competition ◽  
Trifolium Repens L

Causes of low seed set in white clover (Trifolium repens L.)

1993 ◽  
Vol 48 (1) ◽  
pp. 79-83 ◽  
Author(s):  
S. V. PASUMARTY ◽  
T. MATSUMURA ◽  
S. HIGUCHI ◽  
T. YAMADA
Keyword(s):  
White Clover ◽  
Trifolium Repens ◽  
Seed Set ◽  
Trifolium Repens L

An SSR and AFLP molecular marker-based genetic map of white clover (Trifolium repens L.)

Plant Science ◽  
2003 ◽  
Vol 165 (3) ◽  
pp. 531-539 ◽  
Author(s):  
Elizabeth S. Jones ◽  
Leonie J. Hughes ◽  
Michelle C. Drayton ◽  
Michael T. Abberton ◽  
Terry P.T. Michaelson-Yeates ◽  
...  
Keyword(s):  
Molecular Marker ◽  
Genetic Map ◽  
White Clover ◽  
Trifolium Repens ◽  
Trifolium Repens L

Validation of in silico-predicted genic SNPs in white clover (Trifolium repens L.), an outbreeding allopolyploid species

2007 ◽  
Vol 277 (4) ◽  
pp. 413-425 ◽  
Author(s):  
N. O. I. Cogan ◽  
M. C. Drayton ◽  
R. C. Ponting ◽  
A. C. Vecchies ◽  
N. R. Bannan ◽  
...  
Keyword(s):  
White Clover ◽  
Trifolium Repens ◽  
In Silico ◽  
Trifolium Repens L

Observations on resistance in white clover (Trifolium repens L.) to the stem nematode (Ditylenchus dipsaci (Kühn) Filipjev)

1988 ◽  
Vol 110 (1) ◽  
pp. 145-154 ◽  
Author(s):  
R. Cook ◽  
D. R. Evans
Keyword(s):  
White Clover ◽  
Trifolium Repens ◽  
Significant Positive Correlation ◽  
Leaf Size ◽  
Nematode Reproduction ◽  
Long Period ◽  
Plant Collections ◽  
Ditylenchus Dipsaci ◽  
Trifolium Repens L ◽  
Selection For

SummaryThe expression of symptoms of stem nematode reproduction on a total of 53 white clovers (26 cultivars, 14 genepools and 13 introductions from plant collections) was studied in a series of field and glasshouse experiments. Seedlings or stolon-tip cuttings were inoculated with nematodes and the clovers classified by the proportion of plants which developed symptoms. Significant differences were found between varieties although in each test the majority was intermediate between more resistant and susceptible extremes. There was significant positive correlation between tests, in spite of different inoculation methods and different average levels of susceptibility. Very large-leaved cv. Aran was more resistant than most other clovers tested, and small-leaved cv. S. 184 was more susceptible. There was no general correlation of leaf size with reaction to stemnematode. Small-leaved cv. Pronitro was also resistant while several large-leaved cultivars were susceptible. In observations of plants exposed to nematodes over a long period, either by sequential inoculations or through perpetuating latent infections, apparently resistant plants eventually succumbed and supported nematode reproduction. It has not been determined whether this was because selection for virulence in the nematodes had occurred.

scholarly journals Transcriptome analysis reveals potential genes involved in flower pigmentation in a red-flowered mutant of white clover (Trifolium repens L.)

Genomics ◽  
2018 ◽  
Vol 110 (3) ◽  
pp. 191-200 ◽  
Author(s):  
Heshan Zhang ◽  
Hong Tian ◽  
Mingxin Chen ◽  
Junbo Xiong ◽  
Hua Cai ◽  
...  
Keyword(s):  
White Clover ◽  
Transcriptome Analysis ◽  
Trifolium Repens ◽  
Trifolium Repens L ◽  
Flower Pigmentation

scholarly journals Impact of Environmental Factors on Seed Germination and Seedling Emergence of White Clover (Trifolium repens L.)

Agronomy ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 190
Author(s):  
Lei Chu ◽  
Yiping Gao ◽  
Lingling Chen ◽  
Patrick E. McCullough ◽  
David Jespersen ◽  
...  
Keyword(s):  
Seed Germination ◽  
Environmental Factors ◽  
White Clover ◽  
Trifolium Repens ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Soil Surface ◽  
High Sensitivity ◽  
Series Of Experiments ◽  
Trifolium Repens L

White clover (Trifolium repens L.) is cultivated as a forage crop and planted in various landscapes for soil conservation. There are numerous reports of failed white clover stands each year. A good understanding of the seed germination biology of white clover in relation to environmental factors is essential to achieve successful stand establishment. A series of experiments were conducted to investigate the impacts of light, temperature, planting depth, drought, and salt stress on seed germination and the emergence of white clover. White clover is negatively photoblastic, and seed germination averaged 63 and 66% under light and complete dark conditions 4 weeks after planting (WAP), respectively. Temperature affected the seed germination speed and rate. At 1 WAP, seeds incubated at 15 to 25 °C demonstrated a significantly higher germination rate than the low temperatures at 5 and 10 °C; however, the germination rate did not differ among the temperature treatments at 4 WAP. The results suggest that white clover germination decreases with increasing sowing depths, and the seeds should be sown on the soil surface or shallowly buried at a depth ≤1 cm to achieve an optimal emergence. White clover seeds exhibited high sensitivity to drought and salinity stress. The osmotic potential and NaCl concentration required to inhibit 50% seed germination were −0.19 MPa and 62.4 mM, respectively. Overall, these findings provide quantifiable explanations for inconsistent establishment observed in field conditions. The results obtained in this research can be used to develop effective planting strategies and support the successful establishment of white clover stands.

scholarly journals Enhanced drought tolerance in white clover

1993 ◽  
pp. 97-100
Author(s):  
J. Van den Bosch ◽  
I.K. Black ◽  
G.R. Cousins ◽  
D.R. Woodfield
Keyword(s):  
New Zealand ◽  
Drought Tolerance ◽  
White Clover ◽  
Trifolium Repens ◽  
Root Morphology ◽  
Forage Yield ◽  
Plant Survival ◽  
Breeding Programmes ◽  
Trifolium Repens L ◽  
Per Se

Drought-stress limits white clover (Trifolium repens L.) persistence in many New Zealand regions. As a component of breeding for enhanced drought tolerance, 8 selection groups (110 lines in total) of white clover were evaluated in the Wairarapa over a 2-year period. The selection groups included Australian white clover ecotypes, selections from New Zealand dryland populations, root morphology selections, pre-release selections from New Zealand breeding programmes, and existing overseas and New Zealand cultivars. The selection groups derived from New Zealand dryland populations had the highest forage yield and plant survival, 21 of the 24 individual lines with >30% plant survival coming from these groups. Groups containing Australian ecotypes and overseas cultivars had the lowest forage yield and plant survival. Selections for root morphology per se were lower yielding and less persistent than selections made from New Zealand dryland populations evaluated in drought-prone environments. However, some improvements in forage yield and persistence were observed through selecting for root morphology after screening the same New Zealand dryland populations in a drought-prone North Canterbury site. Keywords: drought tolerance, plant breeding, root morphology, Trifolium repens

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