Details

Autor(en) / Beteiligte

• Baig, M.J.(Indian Grassland and Fodder Research Inst., Jhansi (India))E-mail:m_baig@mailcity.com
• Anand, A
• Mandal, P.K
• Bhatt, R.K

Titel

Irradiance influences contents of photosynthetic pigments and proteins in tropical grasses and legumes

Ist Teil von

• Photosynthetica, , Vol.43 (1)

Beschreibungen/Notizen

• Three tropical grasses (Cenchrus ciliaris, Dichanthium annulatum, Panicum antidotale) and two legumes (Macroptilium atropurpureum and Stylosanthes hamata) were grown under four irradiances, i.e. 100 (I 100, control), 75 (I 75), 50 (I 50), and 25 (I 25) % of full sunlight. Accumulation of chlorophyll (Chl) b increased but that of Chl a decreased under low irradiances. The greater accumulation of Chl (a+b) in grasses under shade predicted their shade adaptability. Stylosanthes was more adaptive to the shade than Macroptilium due to its higher accumulation of Chl (a+b). Significant difference in the accumulation of carotenoids under I 25 over I 100 was observed in all the species. There was a significant decrease in soluble protein content in C. ciliaris under I 75. Peroxidase activity in C. ciliaris increased with the decrease in irradiance and its isozyme pattern showed differences among all treatments.