<総説>日本列島の遺伝資源,とくにイネ科コムギ連およびタケ連の遺伝資源学的潜在性の考察

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概要

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• Indigenous species of the tribe Triticeae and tribe Bambuseae, Gramineae, distributed in Japan are thought to be highly interesting and useful from the viewpoint of the genetic resources. This paper briefly reviews and discusses firstly general aspects of the cross compatibility that especially tended to appear in distant cross combinations, and secondly hybridization barriers with relation to the biological species concept. The aspects of the cross compatibility that are discussed testified in the hybridization investigation of the interspecific and intergeneric cross combinations that were made between species in the two tribes. The hybridization barrier between genera of the tribe Bambuseae was shown to be low. Species of Sasa group hybridized successfully with Phyllostachys bambusoides and with Sinobambusa tootsik, both distantly related species of Bambuseae. On the other hand, in the tribe Triticeae all of the distant hybridizations using Elymus tsukushiensis and E. ciliaris required embryo rescue because of abortive endosperm. The average of seed set was higher in the cross combination involving the latter species. The rate of germination is different for the two Elymus species. When comparing the results according to the pollen parents, it seens that species specific differences are involved. In the cross combination involving Hordeum vulgare, the hybrid plants showed somatic chromosome instability. So far as examined Elymus species indigenous to Japan hybridized with hexaploid, tetraploid and diploid wheat species using embryo rescue. The F1 hybrids showed almost no chromosome pairing at MI. The general procedure to produce an additional disomic series of the foreign genome chromosomes to wheat is summarized. Results obtained for some E. ciliaris chromosomes are reported.

• 岡山大学の論文

著者

• 村松 幹夫

  岡山大学農学部

関連論文

• コムギに添加したアオカモジグサ染色体の伝達頻度と二染色体添加植物
• 日本列島の遺伝資源,とくにイネ科コムギ連およびタケ連の遺伝資源学的潜在性の考察
• ミズタカモジグサの交雑親和性とコムギ及びオオムギとのF1雑種
• アオカモジグサ(Agropyron ciliare)染色体のコムギヘの二染色体添加系統の選抜育成に関する研究
• イネ科植物の遠縁交雑親和性と種遺伝学(第22回種生物学シンポジウム : 交雑親和性と種遺伝学)
• 二粒コムギ(Triticum dicoccum)の穂形質と vulgare 及び吹伽遺伝子(Q,q)
• コルヒチン処理によるコムギとカモジグサ属の一種, Agropyron intermedium,との複二倍体種子の育成(英文)

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