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Effect of husk morphology on grain development and topography in rice.

Raju, G. N. and Srinivas, T. (1991) Effect of husk morphology on grain development and topography in rice. Economic Botany, 45 (3). pp. 429-434.

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Kernels grown within loosened glumes in three varieties of paddy were darker in color and had a smoother surface than those grown under normal conditions. The thickness of the pericarp p/us seed coat layers was 33.6 + 2.8 urn, and the thickness of the aleurone layers was 21.7 +_ 2.5 #m in grains of the first type, while in the normal grains, these dimensions were 13.0 +_ 1.4 and 26.9 +_ 2.9 lzm respectively. The kernels which developed within loosened glumes tended to taper towards the distal end. They were lighter in weight than normal grains by 32 to 67 percent, the weight loss being less in the bolder variety. The lemma-palea interlocking depth was positively correlated with the groove depth on the kernel and with the clearance between husk and kernel. All three parameters showed a positive correlation with grain breadth. A low lemma-palea interlocking depth and a smaller clearance between husk and kernel are technologically desirable characteristics in rice. The reclasping of the two glume components after pollination was essential for the normal development of the rice grain.

Item Type: Article
Uncontrolled Keywords: aleurone, glumes, grain development, lemma, palea, rice
Subjects: 600 Technology > 08 Food technology > 14 Physical properties
600 Technology > 08 Food technology > 21 Cereals > 01 Rice
Divisions: Grain Science and Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 13 Mar 2018 08:46
Last Modified: 13 Mar 2018 08:46
URI: http://ir.cftri.res.in/id/eprint/3916

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