• 제목/요약/키워드: Plant

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Burley종 담배의 품종별 재식밀도 및 시비량에 따른 주요 형질의 변화 제1 보. 재식밀도에 따른 초형 변화 (Variation of Agronomic Characters in Burley Tobacco Cultivars according to Plant Density and Fertilizer Levels I. The Effect of Plant Density on Plant Type)

  • 구한서
    • 한국연초학회지
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    • 제16권1호
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    • pp.34-42
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    • 1994
  • Experiments on the variability of plant type and factors representing the productivity and quality of the cultivars were subsequently carried out in relation to different plant density. Results are summarized as below. The higher was the plant density, the greater was the plant height and mean leaf inclination(MLI). As the plant density increased, the horizontal leaf area distribution became greater in proximal to the stem in NTN 77 and Br.49 but evenly in distal part in Br.21. Meanwhile, in terms of vertical leaf area distribution, it was decreased much more in middle and lower leaves than in upper in NTN 77 and Br.49 although it steadily decreased in any part of the plant in Br.21. Br.49 was the largest but Br.21 and NTN 77 were similar with respect to both CGR and NAR. The yield was greater in larger MLI cultivars(NTN 77>Br.49>Br.21). These three characteristics became greater when the tobacco were planted more densely in the field. Dry leaf weight and dry matter weight per plant were heavier in the larger MLI and increased with lower plant density. Total nitrogen content was greater in lower plant density and larger MLI cultivar. The plant density increases filling power seems to be enhanced regardless to the plant type. There was no discernible tendency on combustibility according to the plant density or plant type.

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Taxonomic Discrimination of Higher Plants by$^1H$ NMR

  • Kim, Suk-W.;Ban, Sung-H.;Chung, Hwa-J.;Choi, Dong-W.;Choi, Pil-S.;Liu, Jang-R.
    • 한국식물생명공학회:학술대회논문집
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    • 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
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    • pp.183-183
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    • 2003
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Salicylic Acid as a Safe Plant Protector and Growth Regulator

  • Koo, Young Mo;Heo, A Yeong;Choi, Hyong Woo
    • The Plant Pathology Journal
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    • 제36권1호
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    • pp.1-10
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    • 2020
  • Since salicylic acid (SA) was discovered as an elicitor of tobacco plants inducing the resistance against Tobacco mosaic virus (TMV) in 1979, increasing reports suggest that SA indeed is a key plant hormone regulating plant immunity. In addition, recent studies indicate that SA can regulate many different responses, such as tolerance to abiotic stress, plant growth and development, and soil microbiome. In this review, we focused on the recent findings on SA's effects on resistance to biotic stresses in different plant-pathogen systems, tolerance to different abiotic stresses in different plants, plant growth and development, and soil microbiome. This allows us to discuss about the safe and practical use of SA as a plant defense activator and growth regulator. Crosstalk of SA with different plant hormones, such as abscisic acid, ethylene, jasmonic acid, and auxin in different stress and developmental conditions were also discussed.

Effect of Planting Date and Plant Density on Yield and Quality of Industrial Rapeseed in Spring Sowing

  • Kwon, Byung-Sun;Jung, Dong-Soo
    • Plant Resources
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    • 제8권2호
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    • pp.91-95
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    • 2005
  • In spring, to determine the optimal planting date and plant density of rapeseed in southern areas of Korea. $Taiwan^{\#1}$ variety for spring sowing, the highest yielding variety was grown under five different planting date and plant density. Yield components such as plant height, ear length, number of seedling stand per $m^2$, number of per ear and seed set percentage were highest at the plots with Mar. 5 of planting date and 50/20cm drilling of plant density. Yield of seed, oil, gas and 1,000 grains weight and erucic acid content were highest at the Mar. 5 of planting date and 50/20cm drilling of plant density. Judging from the results reported above, at optimum planting date and plant density of rapeseed seemed too be Mar. 5 of planting date and 50/20cm plant density in spring sowing.

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