Cytological and Genetical Studies on Male Sterility in Cryptomeria japonica D. Don :
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- Saito,Maki
- Forest Experiment Station, Toyama Forestry and Forest Products Research Center
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- Taira,Hideaki
- Niigata University Graduate school of Science and Technology, Course of Biosphere
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- Furuta,Yoshihiko
- Faculty of Agriculture, Gifu University
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Genetic male sterility is a useful trait in plant breeding, especially in angiosperm crops such as corn, onion and carrot. We found a male sterile sugi (Cryptomeria japonica D. Don) tree in Toyama. Japan. Pollen of sugi is one of the major causes of pollinosis in Japan. We carried out this research in an attempt to make clear the characteristics and inheritance of this male sterility. Microsporogenesis of the male sterile tree proceeded meiosis, however, the microspores collapsed after they were separated from pollen tetrads in locules, resulting in complete male sterility. Most likely, ethylene evolution was responsible for male sterility expression. Full seed setting in the male sterile tree indicated normal macrosporogenesis. Seeds obtained from crossing between male sterile and normal lines showed relatively high level of germination and their seedlings grew vigorously. The somatic chromosome numbers of 241 germinated seeds, derived from the male sterile tree, were mostly 22, euploid. These results indicated that male sterile tree was different from other similar previously reported trees with low pollen fertility, resulting from triploid or trisomics. Probahly, male sterility in sugi is either nuclear genetic male sterility or cytoplasmic male sterility.
収録刊行物
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- Journal of forest research
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Journal of forest research 3 (3), 167-173, 1998-08-16
Japanese Forestry Society
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詳細情報 詳細情報について
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- CRID
- 1540854195338053632
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- NII論文ID
- 110002663857
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- NII書誌ID
- AA11074682
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- 本文言語コード
- en
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- データソース種別
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- NDL-Digital
- CiNii Articles