Salt and Mineral Nutrient Levels in Fruits of Two Strand Species, Cakile maritima and Arctotheca populifolia, with Special Reference to the Effect of Salt on the Germination of Cakile
Identifieur interne : 007261 ( Istex/Corpus ); précédent : 007260; suivant : 007262Salt and Mineral Nutrient Levels in Fruits of Two Strand Species, Cakile maritima and Arctotheca populifolia, with Special Reference to the Effect of Salt on the Germination of Cakile
Auteurs : P. J. HicksSource :
- Annals of Botany [ 0305-7364 ] ; 1982-09.
Abstract
Nutrient and salt (NaCI) levels were examined in fruits of two strand species, Cakile maritima and Arctotheca populifolia, collected near Perth, Western Australia. Nutrient levels in seeds of C. maritima and achenes of A. populifolia were relatively high when compared to those in seeds of Australian native species or introduced crop plants, despite the very low nutrient status of the strand habitat. The high levels of organic and essential inorganic nutrients in seeds would be of especial value in seedling establishment. The upper seed of the two-segmented fruit of Cakile was heavier than the lower seed, but both seeds had very similar levels of nutrients. Concentrations of N, P, and micronutrients were very much higher in seeds of Cakile and Arctotheca than in other parts of the fruit. Cakile leaves had similar levels of N and P to seeds, but higher levels of micronutrients, especially Na and Cl. In Cakile, concentration ratios for Na levels in leaves, silicule and seeds were 359: 74: 1 respectively, those for Cl were 200: 30: 1, suggesting very restricted loading of Na and Cl into the phloem stream destined for fruits, and selective uptake by developing embryos. Cakile seeds germinate within their fruit segments, and levels of NaCl in recently-matured fruits would be high enough to suppress germination. The top segment of the fruit had a higher concentration of NaCl than the bottom, and it is likely that this is responsible for the lower germination of seeds within top segments. The literature on seed dormancy in Cakile is reviewed briefly, and it is concluded that salt levels in the fruit wall and strand soil are the major determinants of dormancy in Cakile seeds.
Url:
DOI: 10.1093/oxfordjournals.aob.a086373
Links to Exploration step
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<front><div type="abstract">Nutrient and salt (NaCI) levels were examined in fruits of two strand species, Cakile maritima and Arctotheca populifolia, collected near Perth, Western Australia. Nutrient levels in seeds of C. maritima and achenes of A. populifolia were relatively high when compared to those in seeds of Australian native species or introduced crop plants, despite the very low nutrient status of the strand habitat. The high levels of organic and essential inorganic nutrients in seeds would be of especial value in seedling establishment. The upper seed of the two-segmented fruit of Cakile was heavier than the lower seed, but both seeds had very similar levels of nutrients. Concentrations of N, P, and micronutrients were very much higher in seeds of Cakile and Arctotheca than in other parts of the fruit. Cakile leaves had similar levels of N and P to seeds, but higher levels of micronutrients, especially Na and Cl. In Cakile, concentration ratios for Na levels in leaves, silicule and seeds were 359: 74: 1 respectively, those for Cl were 200: 30: 1, suggesting very restricted loading of Na and Cl into the phloem stream destined for fruits, and selective uptake by developing embryos. Cakile seeds germinate within their fruit segments, and levels of NaCl in recently-matured fruits would be high enough to suppress germination. The top segment of the fruit had a higher concentration of NaCl than the bottom, and it is likely that this is responsible for the lower germination of seeds within top segments. The literature on seed dormancy in Cakile is reviewed briefly, and it is concluded that salt levels in the fruit wall and strand soil are the major determinants of dormancy in Cakile seeds.</div>
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<abstract><p>Nutrient and salt (NaCI) levels were examined in fruits of two strand species, Cakile maritima and Arctotheca populifolia, collected near Perth, Western Australia. Nutrient levels in seeds of C. maritima and achenes of A. populifolia were relatively high when compared to those in seeds of Australian native species or introduced crop plants, despite the very low nutrient status of the strand habitat. The high levels of organic and essential inorganic nutrients in seeds would be of especial value in seedling establishment. The upper seed of the two-segmented fruit of Cakile was heavier than the lower seed, but both seeds had very similar levels of nutrients. Concentrations of N, P, and micronutrients were very much higher in seeds of Cakile and Arctotheca than in other parts of the fruit. Cakile leaves had similar levels of N and P to seeds, but higher levels of micronutrients, especially Na and Cl. In Cakile, concentration ratios for Na levels in leaves, silicule and seeds were 359: 74: 1 respectively, those for Cl were 200: 30: 1, suggesting very restricted loading of Na and Cl into the phloem stream destined for fruits, and selective uptake by developing embryos. Cakile seeds germinate within their fruit segments, and levels of NaCl in recently-matured fruits would be high enough to suppress germination. The top segment of the fruit had a higher concentration of NaCl than the bottom, and it is likely that this is responsible for the lower germination of seeds within top segments. The literature on seed dormancy in Cakile is reviewed briefly, and it is concluded that salt levels in the fruit wall and strand soil are the major determinants of dormancy in Cakile seeds.</p>
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<p>Nutrient and salt (NaCI) levels were examined in fruits of two strand species, <italic>Cakile maritima</italic>
and <italic>Arctotheca populifolia,</italic>
collected near Perth, Western Australia. Nutrient levels in seeds of <italic>C. maritima</italic>
and achenes of <italic>A. populifolia</italic>
were relatively high when compared to those in seeds of Australian native species or introduced crop plants, despite the very low nutrient status of the strand habitat. The high levels of organic and essential inorganic nutrients in seeds would be of especial value in seedling establishment. The upper seed of the two-segmented fruit of <italic>Cakile</italic>
was heavier than the lower seed, but both seeds had very similar levels of nutrients. Concentrations of N, P, and micronutrients were very much higher in seeds of <italic>Cakile</italic>
and <italic>Arctotheca</italic>
than in other parts of the fruit. <italic>Cakile</italic>
leaves had similar levels of N and P to seeds, but higher levels of micronutrients, especially Na and Cl. In <italic>Cakile,</italic>
concentration ratios for Na levels in leaves, silicule and seeds were 359: 74: 1 respectively, those for Cl were 200: 30: 1, suggesting very restricted loading of Na and Cl into the phloem stream destined for fruits, and selective uptake by developing embryos.</p>
<p><italic>Cakile</italic>
seeds germinate within their fruit segments, and levels of NaCl in recently-matured fruits would be high enough to suppress germination. The top segment of the fruit had a higher concentration of NaCl than the bottom, and it is likely that this is responsible for the lower germination of seeds within top segments. The literature on seed dormancy in <italic>Cakile</italic>
is reviewed briefly, and it is concluded that salt levels in the fruit wall and strand soil are the major determinants of dormancy in <italic>Cakile</italic>
seeds.</p>
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<mods version="3.6"><titleInfo><title>Salt and Mineral Nutrient Levels in Fruits of Two Strand Species, Cakile maritima and Arctotheca populifolia, with Special Reference to the Effect of Salt on the Germination of Cakile</title>
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<titleInfo type="alternative" contentType="CDATA"><title>Salt and Mineral Nutrient Levels in Fruits of Two Strand Species, Cakile maritima and Arctotheca populifolia, with Special Reference to the Effect of Salt on the Germination of Cakile</title>
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<name type="personal"><namePart type="given">P. J.</namePart>
<namePart type="family">HICKS</namePart>
<affiliation>Present address: CSIRO Centre for Irrigation Research, Private Mail Bag, Griffith, New South Wales 2680, Australia.</affiliation>
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<originInfo><publisher>Oxford University Press</publisher>
<dateIssued encoding="w3cdtf">1982-09</dateIssued>
<copyrightDate encoding="w3cdtf">1982</copyrightDate>
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<abstract>Nutrient and salt (NaCI) levels were examined in fruits of two strand species, Cakile maritima and Arctotheca populifolia, collected near Perth, Western Australia. Nutrient levels in seeds of C. maritima and achenes of A. populifolia were relatively high when compared to those in seeds of Australian native species or introduced crop plants, despite the very low nutrient status of the strand habitat. The high levels of organic and essential inorganic nutrients in seeds would be of especial value in seedling establishment. The upper seed of the two-segmented fruit of Cakile was heavier than the lower seed, but both seeds had very similar levels of nutrients. Concentrations of N, P, and micronutrients were very much higher in seeds of Cakile and Arctotheca than in other parts of the fruit. Cakile leaves had similar levels of N and P to seeds, but higher levels of micronutrients, especially Na and Cl. In Cakile, concentration ratios for Na levels in leaves, silicule and seeds were 359: 74: 1 respectively, those for Cl were 200: 30: 1, suggesting very restricted loading of Na and Cl into the phloem stream destined for fruits, and selective uptake by developing embryos. Cakile seeds germinate within their fruit segments, and levels of NaCl in recently-matured fruits would be high enough to suppress germination. The top segment of the fruit had a higher concentration of NaCl than the bottom, and it is likely that this is responsible for the lower germination of seeds within top segments. The literature on seed dormancy in Cakile is reviewed briefly, and it is concluded that salt levels in the fruit wall and strand soil are the major determinants of dormancy in Cakile seeds.</abstract>
<subject><genre>keywords</genre>
<topic>Cakile maritima</topic>
<topic>Arctotheca populifolia</topic>
<topic>germination</topic>
<topic>sodium chloride</topic>
<topic>mineral nutrient levels</topic>
<topic>micronutrients</topic>
<topic>macronutrients</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Annals of Botany</title>
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<subject><topic>Articles</topic>
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<identifier type="ISSN">0305-7364</identifier>
<identifier type="eISSN">1095-8290</identifier>
<identifier type="PublisherID">annbot</identifier>
<identifier type="PublisherID-hwp">annbot</identifier>
<part><date>1982</date>
<detail type="volume"><caption>vol.</caption>
<number>50</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>3</number>
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<extent unit="pages"><start>335</start>
<end>343</end>
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<identifier type="ark">ark:/67375/HXZ-577JDX90-K</identifier>
<identifier type="DOI">10.1093/oxfordjournals.aob.a086373</identifier>
<identifier type="ArticleID">50.3.335</identifier>
<accessCondition type="use and reproduction" contentType="copyright">© 1982 Annals of Botany Company</accessCondition>
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