SALINITY AND PARENT-OF-ORIGINS AFFECT LEAF NEOGENESIS OF Avicennia officinalis L. IN THE SUNDARBANS, BANGLADESH

Photosynthetic efficiency as well growth of mangroves are closely associated with its new leaf production and area. Avicennia officinalis L. is one the exclusive ecologically significant mangrove pioneer tree species in Bangladesh portion Sundarbans. The effect salinity parent-of-origins on area A. less zone (LSZ), moderate (MSZ) high (HSZ) Sundarbans were studied under experimental conditions a randomized block design. results experiment highlighted that number from less, zones reduced significantly (p<0.05) increase salinities. Yet, numbers this did not differ between among three 0 to 20 ppt However, 25 above salinities, higher compared zone. Hence, saline environments parental origins affected neogenesis, thereby influence species. Therefore, seedlings strong origin can sustain increasing environments, contribute sustainable vegetation cover Further, generating MSZ HSZ be used for plantation establishment areas Bangladesh.