Relationships between Pollen-ovule Ratio and Autofertility, Self-Compatibility, Automatic Self-Pollination Ability in Heterogeneous Incomplete Autogamous Plants, Thai Mustard

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概要

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• It is generally recognized that the pollen-ovule (P/O) ratio is correlated with the breeding system of plant species; the higher the P/O ratio, the lower the autogamy among species. Evaluation of breeding systems before flowering is useful for the selection of predominantly autogamous breeding materials from heterogeneous incomplete autogamous plants. We analyzed the correlation between the hreeding system and P/O ratio in a Thai mustard cv. Knock out with low autofertility (AF). Automatic self-pollination ability (ASPA) ranged from 29.4% to 52.8%, and ASPA of a line S_6-3 was significantly higher than in the original population. Among 8 S_6 Iines derived from one S_0 Plant by recurrent seed growing after automatic self-pollination, we observed significant negative linear regression equations between AF and the P/O ratio as well as between ASPA and the P/O ratio. These results indicate that the higher AF, particularly ASPA, the lower the P/O ratio even within the selected lines in a local mustard cultivar. Consequently, evaluation of the P/O ratio in flower buds before flowering is a promising method for the selection of breeding materials with high ASPA from hetero-geneous incomplete autogamous or allogamous plants with a similar self-compatibility.

• 日本育種学会の論文

著者

• Namai Hyoji

  Institute Of Agriculture And Forestry University Of Tsukuba

• Namai Hyoji

  Institute Of Agriculture And Forestry Universty Of Tsukuba

• Yashiro Kazutoshi

  Institute of Agriculture and Forestry, Universty of Tsukuba

• Sakai Yoriko

  Institute of Agriculture and Forestry, Universty of Tsukuba

• Yashiro Kazutoshi

  Institute Of Agriculture And Forestry Universty Of Tsukuba:plant Biotechnology Institute Ibaraki Agr

• Sakai Yoriko

  Institute Of Agriculture And Forestry Universty Of Tsukuba

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• Relationships between Pollen-ovule Ratio and Autofertility, Self-Compatibility, Automatic Self-Pollination Ability in Heterogeneous Incomplete Autogamous Plants, Thai Mustard

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