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Experiments were conducted in the research field of the former Wheat and Barley Research with three barley cultivars, Olbori, kangbori and Suwon 18, which show different growth characteristics. Relationships between the degree of grain filling and the functions of photosynthetic organs in grain grow...

Experiments were conducted in the research field of the former Wheat and Barley Research with three barley cultivars, Olbori, kangbori and Suwon 18, which show different growth characteristics. Relationships between the degree of grain filling and the functions of photosynthetic organs in grain growth post-anthesis were investigated by removal treatment of awns and leaves, Stems and leaf sheath contributed to final grain weight invariably with cultivars by 79.2∼81.4%. while the contribution rate of awns and leaf blades varied by different cultivars, Awns contributed by 11.6∼13.8% in 'Olbori' and 'Kangbori', and 5.4% in 'Suwon 18', Contribution of leaf blades was 15.4% for 'Suwon 18', and 4.8∼8.1% for other cultivars, Of leaf blades upper ones showed a higher contribution rate, Early-maturing cultivars which maintain leaf greenness to the late phase of grain growth or awned cultivars were considered advantageous in grain filling.

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