Seed Yields and Germinabilities of Zoysiagrass Species, Cultivars and Seed Type Breeding Lines

Joon-Soo Choi1,*   Geun-Mo Yang1   Eun-Ji Bae2   Kwang-Soo Lee3   Young-Mo Shon2   

1Landscape Architecture, Bio-Resources Science, Dankook Univ., Chungnam 31116, Korea
2Forest Biomaterial Research Center, National Institute of Forest Science, Kyungnam 52817, Korea
3Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science, Jeju 63582, Korea


This research was conducted to investigate seed yield and germinability of 2 basic species, 8 cultivars, and 8 breeding lines. Length of flowering culm, spike length, number of seed per spike, seed yield per square meter, germination percentage after KOH treatment, germination percentage of non-treatment seed, and recovery rate after KOH treatment were evaluated from 2017 to 2018, and 2020. An experiment conducted in plots established using a sprigging method in 1.5 m×1.5 m size with 3 replications in 2010. Length of flowering culm and spike showed over 10 cm and 3 cm for high yielding selections. And the numbers of seeds per spike was over 30 ea. for those high yielding lines. Average seed yield ranged from 0.1 to 55.5 g m-2 for 3 years. The highest seed yield was found in the zoysiagrass ‘Zenith’ with 55.5 g m-2. After KOH seed scarification, Z6085 and ‘Zenith’ showed highest germination rate of 69.3% in 2018 and 92.3% in 2020, respectively. The germination percentage without KOH seed ranked CY6007 (30.7%)>‘Millock’ (25.3%)>‘Senock’ (18%)>‘Konhee’ (13.3%)>‘Semil’ (12.3%)>CY1007 (12.3%)>‘Anyang junggi’ (10%). Selecting of higher seed yielding and germinabilities lines will be useful for breeding of seeded type cultivars.

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