Embryogeny and caryopsis development of sorghum bicolor (L.) Moench

Paulson, I.W. (1969) Embryogeny and caryopsis development of sorghum bicolor (L.) Moench. Crop Science, 9 (1). pp. 97-102.

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Abstract

The morphological development of the caryopsis and embryo of grain sorghum, Sorghum bicolor (L.) Moench, was followed from pollination through 50 days in a cross between varieties 'Reliance' and 'Norghum.' Fertilization occurred 2 to 4 hours after pollination. The primary endosperm nucleus does not have a measurable rest period. The endosperm remains free nucleate for 48 hours after pollination. Three days after pollination, the embryo sac is filled with cellular endosperm. The nucellus is displaced by endosperm 8 days after pollination. The zygote has a rest period of not less than 6 hours or more than 20-22 hours. The first embryonic leaf is initiated at 9 days, and successive leaves are initiated at 10, 15, and 20 days after pollination. The radicle is initiated between 6 and 7 days and is fully defined by 12 days. Vascularization of the embryo consists o£ procambium strands in the embryo axis and the distal lobe of the scutellum. All meristematic activity had terminated by 25 days.

Item Type:	Article
Author Affiliation:	Associate Agronomist, Deere & Company, Moline, IL. 61265
Subjects:	Crop Improvement > Plant Breeding
Divisions:	Sorghum
Depositing User:	Sandhya Gir
Date Deposited:	21 Oct 2010 09:49
Last Modified:	21 Oct 2010 09:54
Official URL:	http://dx.doi.org/10.2135/cropsci1969.0011183X0009...
URI:	http://eprints.icrisat.ac.in/id/eprint/246

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