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<title>UTas ePrints - Variation in seed yield and its components in the Australian native grass Microlaena stipoides as a guide to its potential as a perennial grain crop</title>
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<meta content="Davies, C.L" name="eprints.creators_name" />
<meta content="Waugh, D." name="eprints.creators_name" />
<meta content="Lefroy, E.C." name="eprints.creators_name" />
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<meta content="Ted.Lefroy@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-12-06 04:47:28" name="eprints.datestamp" />
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<meta content="Variation in seed yield and its components in the Australian native grass Microlaena stipoides as a guide to its potential as a perennial grain crop" name="eprints.title" />
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<meta content="This research investigated the potential to domesticate an Australian native grass (Microlaena stipoides) to produce a perennial grain crop. Perennial grain crops offer a new solution to the long-standing problems of salinity and soil erosion associated with conventional cropping systems based on annual plants.
Seed yield and its components (culm number, spikelet number per culm, seed set, seed weight) were measured in 46 accessions of Microlaena stipoides (microlaena, meadow or weeping rice grass) from Western Australia and New South Wales to quantify potentially useful variation in the species.
A high degree of variability was found to exist, with a 20-fold range in seed yield (0.1–2.4 g/plant), 5-fold range in seed weight (129–666 mg per 100 seeds), 2-fold range in spikelet number (14–30 per culm), 8-fold range in seed set (12–98%), and a 5-fold range in culm number (11–59 per plant). Seed yield was positively and significantly (P < 0.05) correlated with culm number, seed set, and seed weight (r > 0.55 for all). No correlation was found between seed yield and spikelet number per culm (r = –0.14).
The range in seed yield and its components suggests that there is sufficient variation within microlaena to make selections for higher yielding lines. This variation will enable breeders to exploit genetic diversity more efficiently and identify useful accessions for further work. High priority traits for future work include synchronous maturity and resistance to shattering.
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<meta content="2005-03" name="eprints.date" />
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<meta content="Australian Journal of Agricultural Research" name="eprints.publication" />
<meta content="56" name="eprints.volume" />
<meta content="3" name="eprints.number" />
<meta content="309-316" name="eprints.pagerange" />
<meta content="10.1071/AR04204" name="eprints.id_number" />
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<meta content="0004-9409" name="eprints.issn" />
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<meta content="Anamthawat-Jonsson K (1996) Wild-hybrids between wheat and lymegrass: breeding and agricultural potential. Buvusindi 10, 101–113.
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Clifford HT (1962) Cleistogamy in Microlaena stipoides (Labill.) R.Br. Department of Botany Papers (University of Queens land) 14, 63–72.
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Earl JM (1993) Seed production of selected accessions of Microlaena stipoides (Labill.) R.Br. Honours Thesis, University of New England, Armidale, NSW, Australia.
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Wagoner P (1990) Perennial grain development: past efforts and potential for the future. Critical Reviews in Plant Sciences 9, 381–408.
Wagoner P (1995) Intermediate wheatgrass (Thinopyrum intermedium) Development of a perennial grain crop. In ‘Cereals and pseudocereals’. 1st edn.(Ed. JT Williams) pp. 247–259. (Chapman and Hall: London)
Wagoner P, Schauer A (1990) Intermediate wheatgrass as a perennial grain crop. In ‘Advances in New Crops: Proceedings of the 1st National Symposium—New Crops, Research, Development, Economics’. Indianapolis. (Eds J Janick, JE Simon, MH O’Connor, JS Pate) pp. 143–145. (Timber Press: Portland, OR)
Waters C, Huxtable C, Whalley W (2000) Microlaena stipoides (Microlaena). In ‘Grassed up: guidelines for revegetating with Australian native grasses’. (Ed. JT Williams) pp. 59–61. (NSW Agriculture: Dubbo, NSW)
Whalley RDB, Jones CE (1997) ‘Commercialising the Australian native grass M. stipoides.’ (RIRDC Publication No. 97/34. Rural Industries Research and Development Corporation: Canberra, ACT)
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<meta content="Lefroy, E.C." name="DC.creator" />
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<meta content="This research investigated the potential to domesticate an Australian native grass (Microlaena stipoides) to produce a perennial grain crop. Perennial grain crops offer a new solution to the long-standing problems of salinity and soil erosion associated with conventional cropping systems based on annual plants.
Seed yield and its components (culm number, spikelet number per culm, seed set, seed weight) were measured in 46 accessions of Microlaena stipoides (microlaena, meadow or weeping rice grass) from Western Australia and New South Wales to quantify potentially useful variation in the species.
A high degree of variability was found to exist, with a 20-fold range in seed yield (0.1–2.4 g/plant), 5-fold range in seed weight (129–666 mg per 100 seeds), 2-fold range in spikelet number (14–30 per culm), 8-fold range in seed set (12–98%), and a 5-fold range in culm number (11–59 per plant). Seed yield was positively and significantly (P < 0.05) correlated with culm number, seed set, and seed weight (r > 0.55 for all). No correlation was found between seed yield and spikelet number per culm (r = –0.14).
The range in seed yield and its components suggests that there is sufficient variation within microlaena to make selections for higher yielding lines. This variation will enable breeders to exploit genetic diversity more efficiently and identify useful accessions for further work. High priority traits for future work include synchronous maturity and resistance to shattering.
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<h1 class="ep_tm_pagetitle">Variation in seed yield and its components in the Australian native grass Microlaena stipoides as a guide to its potential as a perennial grain crop</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Davies, C.L</span> and <span class="person_name">Waugh, D.</span> and <span class="person_name">Lefroy, E.C.</span> (2005) <xhtml:em>Variation in seed yield and its components in the Australian native grass Microlaena stipoides as a guide to its potential as a perennial grain crop.</xhtml:em> Australian Journal of Agricultural Research, 56 (3). pp. 309-316. ISSN 0004-9409</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2566/1/Microlaena-stipoides.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2566/1/Microlaena-stipoides.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />174Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="3374" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/AR04204">http://dx.doi.org/10.1071/AR04204</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">This research investigated the potential to domesticate an Australian native grass (Microlaena stipoides) to produce a perennial grain crop. Perennial grain crops offer a new solution to the long-standing problems of salinity and soil erosion associated with conventional cropping systems based on annual plants.
Seed yield and its components (culm number, spikelet number per culm, seed set, seed weight) were measured in 46 accessions of Microlaena stipoides (microlaena, meadow or weeping rice grass) from Western Australia and New South Wales to quantify potentially useful variation in the species.
A high degree of variability was found to exist, with a 20-fold range in seed yield (0.1–2.4 g/plant), 5-fold range in seed weight (129–666 mg per 100 seeds), 2-fold range in spikelet number (14–30 per culm), 8-fold range in seed set (12–98%), and a 5-fold range in culm number (11–59 per plant). Seed yield was positively and significantly (P < 0.05) correlated with culm number, seed set, and seed weight (r > 0.55 for all). No correlation was found between seed yield and spikelet number per culm (r = –0.14).
The range in seed yield and its components suggests that there is sufficient variation within microlaena to make selections for higher yielding lines. This variation will enable breeders to exploit genetic diversity more efficiently and identify useful accessions for further work. High priority traits for future work include synchronous maturity and resistance to shattering.
</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">http://www.publish.csiro.au/nid/40.htm</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">weeping rice grass, domestication, salinity</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/300800.html">300000 Agricultural, Veterinary and Environmental Sciences > 300800 Environmental Sciences</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2566</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Ms Mignon J Jolly</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">06 Dec 2007 15:47</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">23 Jan 2008 15:50</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2566;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2566">item control page</a></p>
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