Differences in Protein Content, Amylose Content and Palatability in Relation to Location of Grains within Rice Panicle.

Matsue, Yuji; Odahara, Koji; Hiramatsu, Michikazu

doi:10.1626/jcs.63.271

Cited by 39 publications

(15 citation statements)

References 13 publications

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“…The amylose content of the grains on the PRB with superior palatability was higher than that on the SRB. These results suggested that, within a single cultivar under the same cultural conditions, the palatability of cooked grains with a high amylose content and amylogram values was superior to that of the grains with a low amylose content and amylogram values (Matsue et al, 1994(Matsue et al, , 1995.…”

Section: Discussionmentioning

confidence: 90%

Effect of Different Nitrogen Doses on the Storage Proteins and Palatability of Rice Grains of Primary and Secondary Rachis Branches

Song

Choi

Sharma

et al. 2012

Plant Production Science

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Abstract:The effects of applied nitrogen (N) doses on crude protein and amylose accumulation in rice grains on primary and secondary rachis branches and their palatability were examined. The crude protein content of rice grains on both primary (PRB) and secondary rachis branches (SRB) increased with the increase in N supply showing a strong negative correlation with palatability. The correlation coefficient between protein content of the grains on PRB and SRB was -0.92 and -0.98, respectively. Although the amylose content also decreased with increasing N supply, the change was not significant on either PRB or SRB. However, it showed a good correlation with palatability; i.e., the correlation coefficient on PRB and SRB was 0.93 and 0.84, respectively. Analysis of protein by SDS-PAGE showed that the contents of protein bodies PB-I and PB-II, were correlated with palatability, but the latter had a higher correlation. The grains on PRB showed a higher palatability than those on SRB due to the difference in the accumulation pattern of proteins and amylose. These results suggest that when breeding for varieties with good palatability, the plants with more grains on PRB should be selected and by maintaining the nitrogen level in the field, we can control protein accumulation and thus can improve the palatability of rice crop.

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Section: Discussionmentioning

confidence: 90%

Effect of Different Nitrogen Doses on the Storage Proteins and Palatability of Rice Grains of Primary and Secondary Rachis Branches

Song

Choi

Sharma

et al. 2012

Plant Production Science

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“…At low N, the carbohydrate stimulation by elevated [CO 2 ] may not be enough to dilute the GN concentration significantly in well-filled superior spikelets or growth-depressed inferior spikelets. As inferior spikelets usually have a higher N content than superior spikelets (Matsue et al , 1994), inferior spikelets may become an N source for superior spikelets when N is deficient. The translocation of N from inferior to superior spikelets may ameliorate some of the N reduction in superior spikelets at 0N.…”

Section: Discussionmentioning

confidence: 99%

The effects of free-air CO2 enrichment (FACE) on carbon and nitrogen accumulation in grains of rice (Oryza sativa L.)

Zhang

Sakai

Tokida

et al. 2013

Journal of Experimental Botany

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Rising atmospheric CO2 concentrations will probably increase rice (Oryza sativa L.) yield but decrease grain nitrogen (GN) concentration. Grains attached to different positions in the panicles differ greatly in weight and quality, but their responses to elevated CO2 (e[CO2]) are poorly understood, which limits our understanding of the mechanisms of yield enhancement and quality degradation. Thus a free-air CO2 enrichment experiment was conducted to examine the effects of e[CO2] on grain mass (GM), grain carbon (GC), and GN accumulation in the spikelets attached to the upper primary rachis branch (superior spikelets; SS) and those attached to the lower secondary rachis (inferior spikelets; IS). e[CO2] stimulated the rice yield by 13% but decreased the N concentration in the panicle by 7% when averaged over two levels of N fertilizations (P < 0.01). The responses of SS and IS to e[CO2] were different particularly under higher N supply. For SS, e[CO2] decreased GN by 24% (P < 0.01) but did not affect GM. For IS, e[CO2] increased GM by 13% (P < 0.05) but GN was not affected. The reduction of GN due to e[CO2] started to appear at the beginning of grain filling. These results suggest that future [CO2] levels probably stimulate the grain growth of IS, most of which are not marketable due to limited size, at the expense of GN reduction in SS. Translocation of N from SS to IS may be a possible mechanism for reduction in GN of SS. This may degrade the grain quality of marketable rice under e[CO2].

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“…Flowering of an entire panicle takes normally from 4 to 7 days, and the early-flowering spikelets located on primary branches at the top of the panicle are referred to as superior spikelets (SS), whereas the late-flowering spikelets located on secondary branches of the lower primary branches are called as inferior spikelets (IS) (Yang and Zhang, 2010;Peng et al, 2011). The different timing of flowering and thereby grain filling leads to great variation in the weight and quality of SS and IS grains (Matsue et al, 1994;Liu et al, 2005;Cheng et al, 2007;Wang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Grain growth of different rice cultivars under elevated CO2 concentrations affects yield and quality

Zhang

Sakai

Usui

et al. 2015

Field Crops Research

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Differences in Protein Content, Amylose Content and Palatability in Relation to Location of Grains within Rice Panicle.

Cited by 39 publications

References 13 publications

Effect of Different Nitrogen Doses on the Storage Proteins and Palatability of Rice Grains of Primary and Secondary Rachis Branches

Effect of Different Nitrogen Doses on the Storage Proteins and Palatability of Rice Grains of Primary and Secondary Rachis Branches

The effects of free-air CO2 enrichment (FACE) on carbon and nitrogen accumulation in grains of rice (Oryza sativa L.)

Grain growth of different rice cultivars under elevated CO2 concentrations affects yield and quality

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