Carbon dioxide exchange in compact and semi-open sorghum inflorescences

Eastin, J.D. and Sullivan, C.Y. (1969) Carbon dioxide exchange in compact and semi-open sorghum inflorescences. Crop Science, 9 (2). pp. 165-166.

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Abstract

Carbon dioxide exchange rates were monitored in light and dark in compact and semi-open heads of sorghum (Sorghum bicolor (L.) Moench). Developmental stages ranged frmn bloom to hard dough in the grain. Highest CO2 uptake in both head types occurred at the bloom stage when net uptake rates for semi-open and cmnpact type heads were 3.9 and 1.2 mg CO~ g dry wt-1 hr "1, respectively.Beginning at the ,nilk stage, a net COu evolution on the order of 1 to 1.4 mg g dry wt-1 hr -1 occurred in compact heads in the light. The semi-open head type continued a small net CO2 uptake in the light through the milk and soft dough stages. Both head types evolved CO.o at hard dough stage. Dark respiration was similar in both head types and decreased from about 4 to 1 mg CO2 g dry wt-~ hr -~ from bloom to hard dough.

Item Type:	Article
Author Affiliation:	Dept. of Agronomy, University of Nebraska, Lincoln 68503
Subjects:	Crop Improvement
Divisions:	Sorghum
Depositing User:	Sandhya Gir
Date Deposited:	21 Oct 2010 09:19
Last Modified:	21 Oct 2010 10:27
Official URL:	http://dx.doi.org/10.2135/cropsci1969.0011183X0009...
URI:	http://eprints.icrisat.ac.in/id/eprint/238

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