Publication Date
1993
Description
Accelerated ageing (AA) was used to assess the seed vigour of 5 lucerne (Medicago sativa L, cv. Wairau) and 8 white clover (Trifolium repens L. cv. Grasslands Huia) seed-lots. Germination prior to AA ranged from 86-94% and 87-94% for the lucerne and white clover seed-lots respectively. All seed-lots hl\d been harvested in 1988 and were certified either as basic or first generation. Germination after 72 h at 40:t0.5°C (AA test) ranged frcim 31-76% for the lucerne seedlots and 15-56% for che white clover seed-lots, indicating significant differences in seed.vigour among lots of both species. Time of ageing influenced the seed- lot vigour separation. Germination did not differ, significantly during the first 48 h of ageing, but mean germination; fell rapidly between 48 and 72 h (from 86-63% in lucerne and 80- 39% In white clover), As ageing time increased, v_igour differences between individual lots were more clearly differentiated. AA for 72 h; at 40°C is recommended as a test for detecting vigour differences within lucerne and white clover seed-lots.
Citation
Wang, Y R. and Hampton, J G., "Seed Vigour in Lucerne and White Clover" (2024). IGC Proceedings (1993-2023). 4.
https://uknowledge.uky.edu/igc/1993/session51/4
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Seed Vigour in Lucerne and White Clover
Accelerated ageing (AA) was used to assess the seed vigour of 5 lucerne (Medicago sativa L, cv. Wairau) and 8 white clover (Trifolium repens L. cv. Grasslands Huia) seed-lots. Germination prior to AA ranged from 86-94% and 87-94% for the lucerne and white clover seed-lots respectively. All seed-lots hl\d been harvested in 1988 and were certified either as basic or first generation. Germination after 72 h at 40:t0.5°C (AA test) ranged frcim 31-76% for the lucerne seedlots and 15-56% for che white clover seed-lots, indicating significant differences in seed.vigour among lots of both species. Time of ageing influenced the seed- lot vigour separation. Germination did not differ, significantly during the first 48 h of ageing, but mean germination; fell rapidly between 48 and 72 h (from 86-63% in lucerne and 80- 39% In white clover), As ageing time increased, v_igour differences between individual lots were more clearly differentiated. AA for 72 h; at 40°C is recommended as a test for detecting vigour differences within lucerne and white clover seed-lots.
