Plant morphology

About: Plant morphology is a research topic. Over the lifetime, 1174 publications have been published within this topic receiving 24418 citations. The topic is also known as: phytomorphology & morphology of higher plants.

Pharmacognostic standardisation of the leaves of Pimenta dioica Linn.

Abstract: Pimenta dioica commonly known as Allspice was used by early Central American civilizations as a flavoring for chocolate and found to have good anti-microbial action. The current study was therefore carried out to provide requisite pharmacognostic details about the plant. The results of the study could be useful in setting some diagnostic indices for the identification and preparation of a monograph of the plant.

Morphological Characteristics and Germination as Affected by Low Temperature and GA in Orostachys 'Jirisan' and 'Jejuyeonhwa' Seeds, Korea Native Plant

Abstract: This study was conducted to improve the seed germination by low temperature and GA3 in Orostachys japonicus A. Berger (Jirisan) and O. iwarenge (Mak.) Hara (Jejuyeonhwa), Korean native plants. Observation of the seeds using a stereo microscope showed that all seeds of the two species have wrinkled surface and oblong shape. Seed size ranged 0.77-1.00/0.25-0.37 mm (length/width), indicating that the seeds are minute seeds. When the seeds of two Orostachsis species were sown into petri-dish and placed in a plant growth chamber of 10, 15, 20, or 25℃,'Jirisan' showed seed germination below 20% at all temperatures and 'Jejuyeonhwa' 80% at only 10℃. Seed germination of 'Jirisan' increased up to 44% at 10℃ by low temperature (4℃) storage for 10 days, but decreased again at storage for more than 20 days. The seeds of 'Jejuyeonhwa' showed a large increase in seed germination by low temperature for 20-30 days, which was 95% at 10℃, but low temperature for more than 40 days significantly decreased seed germination. Dipping treatment in GA3 solution of 50-400 mg·L -1 for different periods (3, 6, 12, and 24 hrs) remarkably improved germination rate and speed in both species, 80-100% in 'Jirisan' and 90-100% in 'Jejuyeonhwa' at all concentrations and dipping times used in this study.

Provenance variation in pod, seed and seedling traits of dalbergia sissoo roxb., central himalaya, india

Abstract: Seeds collected from 19 different altitudinal sources ranging from 120 to 1130m were evaluated for pod/seed morphology, seed weight, seed germination and seedling growth in nursery and also in field trial. Considerable morphological and physiological variations between provenances for all the pod and seed traits including germination, plant height and collar diameter were found among the seed sources. Among various parameters, seed weight and plant height were most heritable traits, followed by genetic advance and genetic gain. Characters those showed greater genetic influence can be directly screened/selected for the improvement of this potential tree species in Central Himalaya, India for raising quality plating material. Key words: Dalbergia sissoo ; morphological characters; seed source; heritability; genetic variation. DOI: 10.4038/tare.v11i0.1786 Tropical Agricultural Research and Extension Vol.11 2008 pp39-44