Article abstract

Journal of Agricultural and Crop Research

Research Article | Published July 2019 | Volume 7, Issue 7, pp. 119-126.

doi: https://doi.org/10.33495/jacr_v7i7.19.132

 

Trials for hybrid seed production and estimation of wheat F1 hybrids produced by outcrossing using photoperiod-sensitive cytoplasmic male sterile (PCMS) system with elite lines

 



 

 

Koji Murai1*

Haruka Ohta2

Yu Takenouchi2

Masatomo Kurushima3

Naoyuki Ishikawa4

Vladimir Meglič5

Primož Titan5

 

Email Author
Tel: +81-776-61-6000.
Fax: +81-776-61-6015.

 

1. Faculty of Bioscience and Biotechnology, Fukui Prefectural University, 4-1-1 Matsuoka-Kenjojima, Eiheiji-cho, Yoshida-gun, Fukui 910-1195, Japan.
2. Agricultural Research Institute, HOKUREN Federation of Agricultural Co-operative, Minami 2, Higashi 9, Naganuma-cho, Hokkaido 069-1316, Japan.
3. Hokkaido Research Organization, Agriculture Research Department, Kitami Agricultural Experiment Station, 52 Yayoi, Kunneppu-cho, Tokoro-gun, Hokkaido 099-1496, Japan.

4. Western Region Agricultural Research Center, NARO, 6-12-1 Nishifukatsu-cho, Fukuyama, Hiroshima 721-8514, Japan.

5. Agricultural Institute of Slovenia, Hacquetova ulica 17, SI-1000 Ljubljana, Slovenia.


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Citation: Murai K, Ohta H, Takenouchi Y, Kurushima M, Ishikawa N, Meglič V, Titan P (2019). Trials for hybrid seed production and estimation of wheat F1 hybrids produced by outcrossing using photoperiod-sensitive cytoplasmic male sterile (PCMS) system with elite lines. J. Agric. Crop Res. 7(7): 119-126.

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 Abstract 


In previous studies, we presented a two-line system for producing hybrid varieties in common wheat (Triticum aestivum L.) based on photoperiod-sensitive cytoplasmic male sterility (PCMS) caused by the cytoplasm of relative wild species Aegilops crassa L. We have developed several promising elite PCMS lines with the genetic background of Japanese wheat cultivars, which showed high cross-pollination fertility and high male sterility under long-day conditions and high seed fertility under short-day conditions. Here, we performed an F1 seed production trial between eight elite PCMS lines and the pollinator variety ‘Fortunato’, which has high combining ability with the PCMS elite lines, under long-day conditions in Hokkaido, Japan. Two of eight PCMS lines showed complete sterility and had more than 50% open pollination fertility. Using the F1 seeds obtained, the agronomic characters of five F1 hybrids were examined under short-day conditions in Fukui, Japan. The F1 hybrids headed 4 to 5 days earlier than the early-heading elite leading cultivar of Fukui, ‘Fukukomugi’. Compared with ‘Fukukomugi’, yield heterosis of F1 hybrids ranged from 21 to 61% in small plot trials. The results of the present study suggested the practicality of using this PCMS system for hybrid wheat production.

Keywords  Heterosis   hybrid wheat   photoperiod-sensitive cytoplasmic male sterility   wheat    

 

 

Copyright © 2019 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

 

 

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