Articles
RESPONSES OF PAPAYA SEEDLINGS TO WATER STRESS
Article number
1022_12
Pages
97 – 103
Language
English
Abstract
The responses of papaya (Carica papaya) Khaek Dam seedlings to water stress were investigated.
Water stress was imposed by 1, 3, 5, 7 and 9 day of non-watering and subsequent re-watering during a period of 60 days after transplanting in glasshouse condition.
The survival percentage, growth data; stem height, stem diameter, canopy width, leaf area, root length, leaf number and dry weight were measured.
Growth analysis; dry weight percentage, relative growth rate (RGR), net assimilation rate (NAR), specific leaf area (SLA) and root/shoot ratio (R/S) were analyzed.
The results found that the 9 days treatment had lowest survival percentage at 33.3%. The water stress at 3 to 9 day reduced stem height, stem diameter, canopy width, leaf area while it was not found in 1 day treatment.
The root length, and stem dry weight percentages were not different when compared among treatments.
RGR, NAR and R/S ratio did not change due to water stress.
Growth of roots and leaves were enhanced in water stress as they had more root and leaf dry weight percentage.
Water stress was imposed by 1, 3, 5, 7 and 9 day of non-watering and subsequent re-watering during a period of 60 days after transplanting in glasshouse condition.
The survival percentage, growth data; stem height, stem diameter, canopy width, leaf area, root length, leaf number and dry weight were measured.
Growth analysis; dry weight percentage, relative growth rate (RGR), net assimilation rate (NAR), specific leaf area (SLA) and root/shoot ratio (R/S) were analyzed.
The results found that the 9 days treatment had lowest survival percentage at 33.3%. The water stress at 3 to 9 day reduced stem height, stem diameter, canopy width, leaf area while it was not found in 1 day treatment.
The root length, and stem dry weight percentages were not different when compared among treatments.
RGR, NAR and R/S ratio did not change due to water stress.
Growth of roots and leaves were enhanced in water stress as they had more root and leaf dry weight percentage.
Publication
Authors
K. Bunya-atichart, S. Phuwajerernporn, N. Montri
Keywords
growth analysis, net assimilation rate, specific leaf area, root/shoot ratio
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