マレーシアにおける雑草イネ3系統と栽培イネ (MR84) の相対成長性と生育相

• バカー バギビン

  マラヤ大学生物科学研究所

• ダヨ マクリン

  マラヤ大学生物科学研究所

• ナスルルバク アムル

  マラヤ大学生物科学研究所

• ジャファー アブドールムニル

  MARDI統計部

書誌事項

タイトル別名

• Allometric Response and Growth Patterns of Three Accessions of Weedy Rice and A Cultivated Rice (Oryza sativa L. cv. MR84) in Malaysia.

抄録

Growth patterns of cultivated rice varieties and weedy rices vary considerably. Pot experiments were conducted in an insect-proof house at the Institute of Advanced Studies, University of Malaya, Kuala Lumpur in 1993-1994 to evaluate allometric response and growth patterns of three selected strains of weedy rices (Oryza sativa L.) and a cultivated rice (O. sativa L. cv. MR84). Rice cv. MR84 was shorter than the weedy rices but produced more tillers/plant and greater total number of leaves/plant than weedy rice strains V26 and V27. Tillering and leaf production capacity of MR84 and weedy rice V69 were similar. Leaf and non-productive tiller mortality set in ca. 60 days after transplanting (DAT) for MR84 and ca. 30-50 DAT for weedy rites. Both leaf and tiller productions in MR84 and weedy rices exhibited a curvilinear pattern. The net population of number of leaves/plant showed normal quadratic function with time while that of tiller population/plant were sigmoidal, expressed in a generalized form of Y=e^t, where t=a+bx+cx² with meaningful variations in e^t values among the rices for both growth parameters. In the allometric partitioning of biomass, MR84 allocated more biomass to the roots with significantly (p<0.01) higher value of allometric coefficient (k) than the weedy strains. Both MR84 and V69 exhibited significantly higher RE values than V26 and V27. The total number of tillers of MR84 was similar to V27 but was significantly lower than V69 and V26. Grain yield of MR84 was ca. 7.88tons/ha and this was comparable to the respective yields of V26 and V27 but was significantly (p<0.01) lower than that of V69. The percentages of filled grain weight and unfilled grain weight/panicle were comparable, ranging from 83.4% for MR84 and 82.4-89.2% for weedy strains. MR84 registered significantly (p<0.01) heavier 1000 grains weight than the weedy accessions although their harvest indices were fairly similar.

収録刊行物

• 雑草研究

  雑草研究 44 (2), 115-124, 1999

  日本雑草学会

キーワード

• 雑草イネ
• 相対成長
• 再生産効率
• 栄養体投資率

詳細情報

• CRID: 1390001204281029504
• NII論文ID: 110003930757
• NII論文ID: 130003811301
• NII書誌ID: AN00097258
• DOI: 10.3719/weed.44.115
• ISSN: 18824757
• ISSN: 0372798X
• NDL書誌ID: 4820871
• Web Site: http://id.ndl.go.jp/bib/4820871
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4820871
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可