Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
1993
Location
New Zealand
Description
A field experiment was conducted lo clarify the factors responsible, for poor seed set in 4 white clover (Trifolium repens L.) cultivars. Although the mean number of ovules per floret was 5.18-5.29, lhe average number of seeds per floret was found to be only 1.23-1.82. A' stain-clearing technique was used to examine the cytoplasmic state of the embryo sac in intact, unfertilised, mature ovules and it was found that 28;33% of ovules per carpel were sterile. The abortion rate of fertilised ovules and immature seeds (7 days after pollination) ranged between 32 and 34%. Beyond this period, ii was observed that only a very small proportion of the total seeds were lost. The observation of high ovule sterility in all 4 cultivars suggests that this factor could offer prospects for obtaining a higher number of ovules developing into seeds by screening for high-fertility populations of while clover.
Citation
Pasumarty, S V.; Matusmura, T; and Higuchi, S, "Ovule Fertility - A Tool for Selecting High-Fertility Populations of White Clover" (1993). IGC Proceedings (1985-2023). 10.
(URL: https://uknowledge.uky.edu/igc/1993/session45/10)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Ovule Fertility - A Tool for Selecting High-Fertility Populations of White Clover
New Zealand
A field experiment was conducted lo clarify the factors responsible, for poor seed set in 4 white clover (Trifolium repens L.) cultivars. Although the mean number of ovules per floret was 5.18-5.29, lhe average number of seeds per floret was found to be only 1.23-1.82. A' stain-clearing technique was used to examine the cytoplasmic state of the embryo sac in intact, unfertilised, mature ovules and it was found that 28;33% of ovules per carpel were sterile. The abortion rate of fertilised ovules and immature seeds (7 days after pollination) ranged between 32 and 34%. Beyond this period, ii was observed that only a very small proportion of the total seeds were lost. The observation of high ovule sterility in all 4 cultivars suggests that this factor could offer prospects for obtaining a higher number of ovules developing into seeds by screening for high-fertility populations of while clover.
