A comparative anatomical study of the stems in 32 taxa assigned two related genera; Matricaria (4 taxa) and Tripleurospermum (28 taxa, 30 accessions), was carried out Turkey by using cluster analysis (CA) principal component (PCA) to address generic classification delimitation. All studied have following stem characteristics: one layer epidermal cells with a sparse distribution non-glandular tr...

Returning corn cobs to the field during kernel harvesting is an effective way improve soil properties and increase crop yield. However, seasonally frozen seriously hinders decomposition process of cobs. To explore characteristics promote decomposition, in this study, nylon mesh bag method was used perform tests for 150 days. Fiber composition analysis microstructure observation were carried out...

Much contemporary dialogue has centered on the difficulty of establishing validity criteria in qualitative research. Developing validity standards in qualitative research is challenging because of the necessity to incorporate rigor and subjectivity as well as creativity into the scientific process. This article explores the extant issues related to the science and art of qualitative research an...

Objective from study This For know how much big strong press on the brick sago that can become material addition as one _ alternative building. Pith only end waste site processing in a manner tradition Maluku Province. Study about utilization pith Already done However Not yet utilized product . use print measuring 290 x 120 80mm. Composition Concrete sand 53%, cement 25%, 6%, water 16%, for tes...

This study aims to determine the anatomical structure and histochemical test of terpenoid phenol compounds in two varieties green betel plants (Piper betle). Making leaves preparations using fresh method, testing with 5% copper acetate, ferric trichloride 10% some grains sodium carbonate. The observations leaf 1 2 have similarities consisting upper epidermis, hypodermis, palisade parenchyma, pa...

Tree decline due to climate change results in physiological weaknesses, attacks by harmful pests and pathogens threats forest ecosystem stability. In the work described here, effects of drought on wood density, tree ring width variations vessel morphology are investigated Persian oak (Quercus brantii) Zagros Mountains, Ilam Province, western Iran. Discs cut from trunks declined healthy trees wo...

Since 2017, Populus cathayana in Shuangshu Nursery, Huzhu County, Qinhai Province has suffered from extensive necrosis of branches, yellow pith tissue, cracks bark to severe cases, brown mucus outflow summer, yellowish pith, and no obvious disease. In this study, symptom observation, specimen collection, pathogen isolation culture, morphological observation molecular biological identification w...