Varietal differences in sink production and grain-filling ability in recently developed high-yielding rice (Oryza sativa L.) varieties in Japan

Yoshinaga, Satoshi; Takai, Toshiyuki; Arai‐Sanoh, Yumiko; Ishimaru, Tsutomu; Kondo, Motohiko

doi:10.1016/j.fcr.2013.06.004

Cited by 119 publications

(77 citation statements)

References 38 publications

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“…; nS denotes non-significance. reserves on high grain filling and grain yield has been reported (Yoshinaga et al, 2013), high remobilization of stored reserves may also result in earlier plant senescence (Yang & Zhang, 2010) and consequently it may reduce biomass production during grain-filling period and grain yield (Hirel et al, 2007). Therefore, a higher harvest index is not always better.…”

Section: Resultsmentioning

confidence: 99%

Agronomic performance of late-season rice in South China

Huang

Shan

Zhou

et al. 2017

Plant Production Science

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a Southern regional collaborative innovation center for Grain and oil crops (cicGo), Hunan agricultural university, changsha, P.r. china; b Key laboratory of crop cultivation and Farming System, Guangxi university, nanning, P.r. china ABSTRACT Improving rice yields is critical for global food security. China is a major rice-producing country having two rice cropping systems, i.e. single-season rice cropping system and a double-season system with both early-and late-season rice. There have been reports on the sink-source traits contributing to high grain yield for single-and early-season rice, but such information is limited for late-season rice. In this study, field experiments were conducted at the research farm of Guangxi University, Nanning, Guangxi Province, China in the late rice-growing season. Grain yield and sink-source traits were compared among five cultivars (Guiliangyou 2, Teyou 838, Y-liangyou 087, Teyou 582, and Yuxiangyouzhan) in 2012 and then three cultivars (Guiliangyou 2, Teyou 838, and Y-liangyou 087) in 2013. Y-liangyou 087 produced 6-26% higher grain yield than did the other cultivars. This higher grain yield was driven by improvements in sink-source capacity. Sink capacity was 8-31% higher in Y-liangyou 087 than in the other cultivars. Well-balanced relations between spikelets m −2 and grain weight was responsible for the higher sink capacity in Y-liangyou 087. The result was that Y-liangyou 087 produced 11-17% greater biomass (source capacity) than did the other cultivars. The greater source capacity in Y-liangyou 087 was mainly attributed to higher radiation use efficiency (RUE). Our study suggests that enhancing sink capacity through balanced relations between number of spikelets per unit land area and grain size, while improving source capacity through increasing RUE is a feasible way to achieve higher grain yield of late-season rice in South China.

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Section: Resultsmentioning

confidence: 99%

Agronomic performance of late-season rice in South China

Huang

Shan

Zhou

et al. 2017

Plant Production Science

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“…It is popular for the consumption eaten as boiled rice and a standard variety that shows similar growth duration to that of AKI and enough lodging resistance for heavy nitrogen application. It was utilized for the first rice genome sequence analysis (International Rice Genome Sequencing Project, 2005) and have been frequently used for the evaluation of the characteristics of high-yielding varieties (Ando et al, 2011;Kusutani et al, 1999;Nagata et al, 2016;Oka et al, 1987;Takeda et al, 1984;Tsukaguchi et al, 1996;Yoshinaga et al, 2013).…”

Section: Field Experimental Detailsmentioning

confidence: 99%

“…In recent years, high-yielding varieties are increasingly being grown for purposes other than direct human consumption such as rice flour and animal feed (Yoshinaga et al, 2013) in Japan. Although grain yield of most of these varieties has been at the highest level among Japanese varieties but the palatability of boiled rice was out of the target.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of growth and quality, and factors contributing to high yield in newly developed rice variety ‘Akidawara’

Yoshinaga

Heinai

Ohsumi

et al. 2018

Plant Production Science

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The newly developed rice variety 'Akidawara' (AKI) combines the traits of high yield and highly palatability, and its cultivation is expected to spread. We examined characteristics of growth and quality, and factors contributing to high yield in AKI by comparing with 'Nipponbare' (NIP). Grain yield for AKI were 703 g m −2 (9% more than NIP) and 781 g m −2 (14% more than NIP) under the standard and heavy fertilizer regimes. It was also suggested that increase in the sink capacity was the key contributors to the high yield in AKI resulting from a conspicuous increase in the number of spikelets, which is likely due to introgression of the high-yielding variety allele. Furthermore, AKI achieved the similar degree of sink filling in spite of its larger sink capacity. In this point, panicle dry weight increase during ripening (ΔP) was significantly higher for AKI than for NIP despite the fact that no differences in shoot dry weight increase were observed between varieties. The greater ΔP in AKI might be derived from its larger sink capacity and the difference between varieties involves the translocation of nonstructural carbohydrate. In the grain quality, the reduction in perfect grain ratio was negligible and regarded as a small trade-off for AKI's 14% increase in yield, and grain protein content increased to a lesser degree in AKI at the same yield level. These results suggest that over 700 g m −2 high yield can be achieved with relative high grain quality and lower protein content in AKI.

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“…As well as the responses of the growth stages to changes in sowing date, we collected preliminarily data on yield, which decreased with later sowing date by up to 24% of the best yield from about 14% of the best yield (data was not shown) according to cultivars. To increase yields, it is important to increase the optimal spikelet density (Horie et al, 1997), as a large sink capacity results from a high sink production efficiency per unit of absorbed nitrogen (Yoshinaga et al, 2013). Our results also show that it is important to consider when a plant matures for establishing of rotational cropping systems.…”

Section: Discussionmentioning

confidence: 60%