@techreport{oai:kindai.repo.nii.ac.jp:00021515,
 author = {加藤, 恒雄 and 青木, 直大 and 堀端, 章},
 month = {},
 note = {https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K07627/, 研究成果の概要（和文）：イネ極穂重型品種の登熟に関与すると考えられるAPS2，APL2およびSUT1座上のアレル1およびアレル2を2種類の遺伝的背景下でもつ準同質遺伝子系統（NILs）を育成した．また上記3座ですべてアレル2をもつ新規超極穂重型品種ツブマサリを開発した．これらのNILsを基に，登熟関連形質に対する各アレルの効果と相互作用を2年間に亘り検証した．またツブマサリの収量性を検討した．その結果，主としてAPL2-2，部分的にSUT1-2は，登熟を向上させる「良登熟型アレル」と推察された．一方，ツブマサリは，両親並みの収量性を示すに留まった．本品種の多収達成には，ソース能力等の改良が今後必要である．研究成果の概要（英文）：This study evaluated the alleles 2 at rice APS2, APL2 and SUT1 loci for the improvement of grain filling of rice extra-heavy panicle types (EHPTs). Two sets of near-isogenic lines (NILs) with allele 1 (a counterpart of allele 2) or 2 at each loci under two backgrounds were established. Then, grain filling, ADPglucose pyrophosphorylase (AGPase) activity, protein and gene expressions in developing endosperm were examined. Results showed that mainly APL2-2 and partly SUT1-2 obviously improved grain filling. This increase would be resulted from the increasing AGPase activity, and expression of APL2 and SUT1 proteins. Therefore, APL2-2 and SUT1-2 would be alleles for good gain-filling, although it depended on the environments and backgrounds. A novel cultivar of super-EHPT, “Tsubumasari”, having alleles 2 at all of the three loci, however, could not show\
higher yield, due to lower grain filling. Further improvement of source strength of this cultivar should be needed for super-high yield., 研究種目：基盤研究(C);  研究期間：2017～2019;   課題番号：17K07627;   研究分野：農学;   科研費の分科・細目：, application/pdf},
 title = {イネ良登熟型遺伝子の準同質遺伝子系統および新規超極穂重型系統を用いた機能検証},
 year = {2020},
 yomi = {カトウ, ツネオ and アオキ, ナオヒロ and ホリバタ, アキラ}
}