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http://hdl.handle.net/2239/32227
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| Title: | Kernel Size Variation in Naked Oat. |
| Authors: | Doehlert, D.C.
Jannink, J.L.
McMullen, M.S.
USDA, ARS |
| Keywords: | grain quality
seed size
oat groats
Avena sativa
oats
hulls
Avena nuda
grain yield
inflorescences
plant architecture
spatial variation
volume
genotype
genetic variation |
| Issue Date: | 17-Oct-2007 |
| Description: | Kernel size in naked oat (Avena sativa L.) is of interest because of the importance of groat size in determining flake size in "old fashioned" style oat flakes. Here we compared naked oat kernel size distributions with those of hulled oat (Avena sativa L.). Most hulled oat spikelets have two kernels, where the primary kernel is distinctly larger than the secondary kernel. Although naked oat panicle architecture was similar to that of hulled oat, naked oat had a distinctive multiflorous spikelet architecture that contained from one to six kernels. Because single and double-kernel spikelets were most abundant in naked oat, the mean kernel number per spikelet did not differ between hulled oat and most naked genotypes. Like hulled oat, naked oat kernel size decreased with increasing kernel order. All hulled oat and most naked genotypes had size distributions departing from normality, but some naked genotypes had normal kernel size distributions. Variances of naked oat kernel size were much smaller than those of hulled genotypes, indicating a greater degree of kernel sizes uniformity in naked genotypes. However, the increased variation in the hulled oat kernel size appeared to be due to the presence of the hull and hulled oat groats had about the same size variation as did naked oat groats. |
| URI: | http://seekspace.resip.ac.cn/handle/2239/32227 |
| Other Identifiers: | http://seekspace.resip.ac.cn/handle/10113/3559 |
| Appears in Collections: | 网络开放学术资源
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