PARENT SESSION
Posters P3B Photosynthetic acclimation: Ecophysiology, diverse environments. Abstracts (479-522)

Photosynthesis of aphyllous organs in cotton. Pradeep Suwal^*,1, Ananda Dallakoti¹, ¹ Research Department, Kathmandu, Bagmati, Nepal

ABSTRACT- Photosynthesis leaf is the main source of assimilates for the growth and development of vegetative organs in the plant. however, some other chlorophy 11 - containing organs (stem, bract, green bolls) of the plant may also carry out considerable part of the donor's functions. In the connection, investigation of the photosynthesis in aphyllous organs in cotton and their contribution in to the total photosynthetic productivity of this plant is the aim of our work. Photosynthesis was determined by radiometric method. It is proved that at mid October, by the end of cotons vegetation, when leaf's photosynthesis decreases sharply, the intensity of CO2 assimilation in bracts and bolls increases and is to 50 -60 percent of total photosynthesis in the plant. The highest assimilating capacity is characteristic to the bract (30 - 40 %)

KEY WORDS: growth and development, containing organs