Longevity of seeds

46 542 875 936 719 672 728 573 663 868 674 1 6 2

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 29 1 7 25 7.15 3.38 44 27 4.19 21 15 26 31 23 15 22 37 24 23 4.98 4.7 3.43 6.42 6.43 46 4.04 25 58 10 1 46 3.41 9 5.30 5.09 10 3.81 4.51 9.00 2.58 6.16 6.74 21 20 56 40 46 52 43 33 154 48 5.42 6.61 7.46 5.42 8.75 9.36 7.19 6.72 7.28 5.73 6.63 8.68 6.74 1 6 2 short short short short short short short short short short C. Walters et al. 14 Table 3. Continued Genus Species NPGS Solanum Trifolium Trifolium Triticum Chenopodium Citrullus Cucumis Eragrostis Eragrostis Hordeum Lathyrus Lupinus Melilotus Sorghum Abelmoschus Avena Beta Brassica Cicer Cucumis Eleusine Lens Lycopersicon Medicago Panicum Pisum Raphanus Spinacia Trifolium Vicia Vigna Zea Datura Elymus Elymus Lactuca Polygonum Solanum Sporobolus melongena incarnatum pratense aestivum quinoa lanatus sativus curvula tef (abyssinica) vulgare odoratus polyphyllus alba bicolor esculentus sativa vulgaris hirta arietinum melo coracana culinaris esculentum sativa miliaceum sativum sativus oleracea repens sp. radiata mays stramonium canadensis virginicus serriola persicaria scabrum (nigrum) airoides 46 59 43 54 250 68 87 44 66 84 40 Average Median Maximum Minimum Total number 68 42 456 13 87 Stanwood (unpubl.) Ellis Viability Equations Roos and Davidson Toole and Brown 54 57 40 318 199 85 58 315 164 5.25 5.36 7.59 65 4.92 69 63 89 63 53 87 117 42 76 70 66 437 365 73 93 88 97 120 73 77 71 457 49 104 25 109 21 145 453 64 Priestley et al. 43 45 21 1 7.19 13.63 6.2 33.4 125 125 88 152 250 12.96 16.51 13.71 15.29 224 43 6 61 168 130 55 487 497 102 127 133 335 263 10.65 24.52 10.56 11.9 15.86 13.82 12.76 8.21 11.4 19.54 9.6 124 1 130 37 8 39 1 1 1 15.5 16 10 95 57 497 10 39 were in either the lower or upper third in one experiment and the middle third in another were assigned intermediate categories. Species that stored well in one experiment, but poorly in another, were considered to have variable performance and provide an opportunity to study growth and processing conditions that affect storability. For example, the low P50s for Phaseolus vulgaris (Fabaceae) from the NPGS collection and Cucumis sativus (Cucurbitaceae) from Priestley et al. (1985) suggest some type of mishandling. 117 48 487 7 27 9 7 33 3 62 62 46 130 27 14 Relative longevity Medium Medium Medium Medium Medium long Medium long Medium long Medium long Medium long Medium long Medium long Medium long Medium long Medium long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Unranked Unranked Unranked Unranked Unranked Unranked Unranked 10 6 39 1 22 The data presented in this survey confirm some widely held ideas about relative longevities among species. For example, P50s calculated for the small cereal grains (Poaceae) in the NPGS collection suggest a relative longevity ranking of Avena sativa . Hordeum vulgare . Triticum aestivum . Secale cereale $ Oryza sativa [Table 1, which is consistent with the ranking of P50s by Priestley et al. (1985) in Table 3]. Rankings are also consistent with preliminary findings...
View Full Document

Ask a homework question - tutors are online