
The species Heliocarpus popayanensis is used on floristic recomposition of degraded areas, wich's soil might present hypoxy. Considering these aspects, this studies evaluates this species answers to flooding. Young plants were submitted to drained and flooded subtract for 30 and 60 days, then flooded for 30 days and then drained for more 30 days. Main root and stem length, area and number of leaves, biomass and relative growth rate of roots, stems and leaves and the nutritional content of leaves were determined. Until 60 days of flooding there was a percentage reduction in biomass (38%), in RGR (77%) and in the area of leaves, including reduction in root and stem's diameter (70%), and in the lignification of phloematic cells. There was no anatomic alteration in leaves, but there was reduction of nutrient concentration (N, P, K, Fe, Cu, B). Therefore, young plants of the species Heliocarpus popayanensis survive to the flooding period considered above, probably due to anatomical and morphologic alterations. The rarity of this species in the flooded area is probably related to other stages of the life cycle, such as seeds germination or competition with other species in the environment.
The species Heliocarpus popayanensis is used on floristic recomposition of degraded areas, wich's soil might present hypoxy. Considering these aspects, this studies evaluates this species answers to flooding. Young plants were submitted to drained and flooded substract for 30 and 60 days, then flooded for 30 days and then drained for more 30 days. Main root and stem length, area and number of leaves, biomass and relative growth rate of roots, stems and leaves and the nutritional content of leaves were determined. Until 60 days of flooding there was a percentual reduction in biomass (38 %), in RGR (77 %) and in the area of leaves, including reduction in root and stem's diameter (70 %), and in the lignification of floematic cells. There was no anatomic alteration in leaves, but there was reduction of nutrients concentration (N, P, K, Fe, Cu, B). Therefore, young plants of the species Heliocarpus popayanensis survive to the flooding period considered above, probably due to anatomical and morphologic altérations. The rarity of this species in flooded area is probably related to other stages of the life cycle, such as seeds germination or competition with other species in the environment.
The species Heliocarpus popayanensis is used on floristic recomposition of degraded areas, wich's soil might present hypoxy. Considering these aspects, this studies evaluates this species answers to flooding. Young plants were submitted to drained and flooded substract for 30 and 60 days, then flooded for 30 days and then drained for more 30 days. Main root and stem length, area and number of leaves, biomass and relative growth rate of roots, stems and leaves and the nutritional content of leaves were determined. Until 60 days of flooding there was a percentual reduction in biomass (38%), in RGR (77%) and in the area of leaves, including reduction in root and stem's diameter (70%), and in the lignification of floematic cells. There was no anatomic alteration in leaves, but there was reduction of nutrients concentration (N, P, K, Fe, Cu, B). Therefore, young plants of the species Heliocarpus popayanensis survive to the flooding period considered above, probably due to anatomical and morphologic alterations. The rarity of this species in flooded area is probably related to other stages of the life cycle, such as seeds germination or competition with other species in the environment.
يستخدم النوع Heliocarpus popayanensis في إعادة التركيب الزهري للمناطق المتدهورة، وقد تسبب تربة wich نقص الأكسجة. بالنظر إلى هذه الجوانب، تقيّم هذه الدراسات استجابات هذا النوع للفيضانات. تم تقديم النباتات الصغيرة لتصريفها وطرحها لمدة 30 و 60 يومًا، ثم غمرتها المياه لمدة 30 يومًا ثم تم تصريفها لأكثر من 30 يومًا. تم تحديد طول الجذر والساق الرئيسي ومساحة وعدد الأوراق والكتلة الحيوية ومعدل النمو النسبي للجذور والسيقان والأوراق والمحتوى الغذائي للأوراق. حتى 60 يومًا من الفيضانات، كان هناك انخفاض بنسبة مئوية في الكتلة الحيوية (38 ٪)، وفي RGR (77 ٪) وفي مساحة الأوراق، بما في ذلك انخفاض في قطر الجذر والجذع (70 ٪)، وفي ترصيع الخلايا الدموية. لم يكن هناك تغيير تشريحي في الأوراق، ولكن كان هناك انخفاض في تركيز المغذيات (N، P، K، Fe، Cu، B). لذلك، فإن النباتات الصغيرة من النوع Heliocarpus popayanensis تبقى على قيد الحياة حتى فترة الفيضان المذكورة أعلاه، ربما بسبب التغيرات التشريحية والمورفولوجية. من المحتمل أن تكون ندرة هذا النوع في المنطقة المغمورة مرتبطة بمراحل أخرى من دورة الحياة، مثل إنبات البذور أو التنافس مع الأنواع الأخرى في البيئة.
Biomass (ecology), Germination, Plant Science, Horticulture, Agricultural and Biological Sciences, Importance of Mangrove Ecosystems in Coastal Protection, Molecular Responses to Abiotic Stress in Plants, Biology, Ecology, Botany, Competition (biology), Life Sciences, Agronomy, Plant Responses to Flooding Stress, FOS: Biological sciences, Environmental Science, Physical Sciences, Hypoxia Adaptation, Nutrient
Biomass (ecology), Germination, Plant Science, Horticulture, Agricultural and Biological Sciences, Importance of Mangrove Ecosystems in Coastal Protection, Molecular Responses to Abiotic Stress in Plants, Biology, Ecology, Botany, Competition (biology), Life Sciences, Agronomy, Plant Responses to Flooding Stress, FOS: Biological sciences, Environmental Science, Physical Sciences, Hypoxia Adaptation, Nutrient
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