Genetic analysis of nutritional quality traits in milled kernels of hybrid rice based on the additive-dominance model

Peyman Sharifi, . Genetic analysis of nutritional quality traits in milled kernels of hybrid rice based on the additive-dominance model. pp. 193-203. ISSN 1394-9829

A complete diallel cross with seven rice genotypes was conducted to study the seed endosperm maternal and cytoplasmic effects on some nutritional quality traits in milled rice kernels. The traits included contents of protein phosphorous (P) potassium (K) iron (Fe) zinc (Zn) and manganese (Mn). The results showed that the protein and mineral contents were controlled by seed endosperm cytoplasmic and maternal effects. The proportions of seed dominance variances were larger for protein P K and Fe contents. They were mainly controlled by dominance effects and could be increased through heterosis. The seed additive effect was significant for Fe and Mn contents. Therefore single plant and grain selection based on the seed mineral contents were chosen to improve the hybrid progeny. In addition Fe Zn and Mn contents were also affected by cytoplasmic main effects. Two of the 42 crosses (Shahpasand Hasani and Hasani Saleh) had significant dominance effects on protein and the four mineral (P K Fe and Zn) contents. According to the genetic predicted value the genotypes Hasani and Deilamani were the better parents for increasing the mineral contents in the progenies.

Full text available from: Official URL: http://jtafs.mardi.gov.my/jtafs/41-2/Hybrid%20rice...

Abstract

A complete diallel cross with seven rice genotypes was conducted to study the seed endosperm maternal and cytoplasmic effects on some nutritional quality traits in milled rice kernels. The traits included contents of protein phosphorous (P) potassium (K) iron (Fe) zinc (Zn) and manganese (Mn). The results showed that the protein and mineral contents were controlled by seed endosperm cytoplasmic and maternal effects. The proportions of seed dominance variances were larger for protein P K and Fe contents. They were mainly controlled by dominance effects and could be increased through heterosis. The seed additive effect was significant for Fe and Mn contents. Therefore single plant and grain selection based on the seed mineral contents were chosen to improve the hybrid progeny. In addition Fe Zn and Mn contents were also affected by cytoplasmic main effects. Two of the 42 crosses (Shahpasand Hasani and Hasani Saleh) had significant dominance effects on protein and the four mineral (P K Fe and Zn) contents. According to the genetic predicted value the genotypes Hasani and Deilamani were the better parents for increasing the mineral contents in the progenies.

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Item Type:	Article
AGROVOC Term:	Kernels
AGROVOC Term:	Rice
AGROVOC Term:	Additives
AGROVOC Term:	Diallel crossing
AGROVOC Term:	Endosperm
AGROVOC Term:	Prediction
AGROVOC Term:	Maternal effects
AGROVOC Term:	Nutrition
AGROVOC Term:	Genotypes
AGROVOC Term:	Protein content
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24472

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