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Gene bank scheduling of seed regeneration: Interim report on a long term storage study

Journal of Integrative Agriculture 2019年第7期18卷 1529-1540页

作者： Robert Redden debra partington Australian Temperate Field Crops Collection Private Bag 260Agriculture Victoria

A major challenge for the management of gene banks is the maintenance of good seed health in the *** germplasm collections >10 000 accessions often have been acquired from different sources over a range of dates,may differ in germination at time of deposition in the gene bank,and may have genetic differences in seed *** major storage variables affecting seed longevity are temperature and seed moisture *** varieties of each pea(Pisum sativus L.),lentil(Lens culinaris Medikus ***),and chickpea(Cicer arietinum L.),were stored at three temperatures;40,20,and 2°C,each with three seed moisture levels of 10.9–13.8%(high),7.9–10.3%(medium),and 7–7.8%(low),in the Australian Temperate Field Crops Collection gene *** longevity at a given storage period was estimated by the corresponding germination percentage for each *** paper is an interim report on seed viability decline in the first seven years of this seed longevity study,in which viability decline towards zero was almost completed in the three seed moisture treatments at 40°C and the 20°C high seed moisture treatment,but had not declined in the other *** longevity positively responded to a reduction in temperature and then to a reduction in seed *** number of days in storage for seed germination decline to 85%(p85),and to 50%(p50) for mean seed viability,are reported by storage/varietal *** p85 and p50 showed significant inverse linear responses with seed moisture at 40°C for pea and lentil varieties,with intra-specific variation for *** long term trial aims to provide informed timing of seed regeneration for accessions in a gene bank.

关键词： gene bank storage moisture level temperature regeneration pea lentil chickpea

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