Seed viability constants and the decline in germination rates for radish: a combined viability equation and population-based threshold model analysis

Author:

Coronado Nadine B.1,Gentallan Renerio P.1,Hay Fiona R.2,Timog Emmanuel Bonifacio S.3,Quiñones Kristine Joyce O.1,Bartolome Michael Cedric B.1,Endonela Leah E.1,Altoveros Nestor C.1,Borromeo Teresita H.1

Affiliation:

1. Institute of Crop Science, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines

2. Department of Agroecology, Aarhus University, Forsøgsvej 1, 4200 Slagelse, Denmark

3. Institute of Crop Science, College of Agriculture and Food Science, University of the Philippines Los Baños, Laguna, Philippines; Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños, Laguna, Philippines

Abstract

Aside from the leaves and roots, radish seedlings are consumed as a "microgreen". Production of microgreens requires high viability, high vigour seeds. Knowledge of the rates of loss of viability and vigour decline during storage would therefore be useful for radish sprout production, but also in relation to the conservation of radish germplasm in seed genebanks. Seeds of radish 'Kaiware', a microgreen cultivar, were stored hermetically at seven moisture levels between 6% and 13% at 50°C. Seed viability (germination after removal from storage) was scored daily to determine germination progress curves. One-step analysis was used to simultaneously fit the population-based threshold (PBT) model describing the decline in germination rates with ageing and to estimate the effects of MC on longevity according to the viability equation. KE and CW were estimated as 6.54 and 3.22, respectively. The ageing-time constant for the PBT model, age, increased as a function of storage moisture content, reflecting the faster decline in vigour at higher MC. The validity of the viability constants was tested by predicting viability loss in seeds of a different radish cultivar, 'Sango Purple', stored at 45°C and 8.61% MC.

Publisher

International Seed Testing Association

Subject

Horticulture,Plant Science,Agronomy and Crop Science

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Seed Science and Technology. Volume 51 Issue 3 (2023);Seed Science and Technology;2023-12-31

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