Improvement of yield performance by examining the morphological aspects of a leading winter wheat variety, ‘Kitahonami’, in Hokkaido, the northernmost region of Japan

Figures & data

Figure 1. Plant types of winter wheat varieties ‘Kitahonami’ and ‘Hokushin’.

Photograph taken on 22 May 2012.

Figure 2. Crop growth rates from flowering to milk-ripe stage and from milk-ripe stage to maturity stage in winter wheat varieties ‘Hokushin’ and ‘Kitahonami’ (Kasajima et al., 2016).

Figure 3. Method of tracking tillering using commercially available colored rubber bands (Araki, 2015a). The different colored rubber bands were used to distinguish between the different starting times of tillering.

Figure 4. Relationship between the starting time of tillering and production rate in ‘Kitahonami’ (Araki, 2015a). The data is the average of two experimental fields in two growing seasons.

Figure 5. Schematic diagram of improved method for the cultivation of ‘Kitahonami’ wheat variety with high-yielding ability after winter.

Kasajima, S., Takahashi, T., Imai, K., Shimizu, T., Itoh, H., Nakamaru, Y., … Yoshimura, Y. (2016). Hokkaidou ni okeru akimakisei komugi sin kyuuhinsyu Kitahonami to hokusin no seiiku・syuuryou tokusei no sai. [Differences in growth and grain yield performance between old and new winter wheat varieties ‘Hokushin’ and ‘Kitahonami’ in Hokkaido]. Japanese Journal of Crop Science, 85(2), 155–161.

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Araki, H. (2015a). Hokkaidou no aki maki komugi ni okeru bun getu sei ni kan suru kenkyuu － dai 1 hou bun getu tuiseki syuhou no kentou to bun getu syutugen ziki ga ho keisei・syuuryou ni oyo bosu eikyou －. [Studies on the tillering of winter wheat in Hokkaido. 1. Development of tillering tracking method and effect of tillering appearance time on ear formation and yield]. Japanese Journal of Crop Science, 84(1), 34–40.

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