Yield potential and radiation use efficiency of “super” hybrid rice grown under subtropical conditions

Zhang, Yunbo; Tang, Qiyuan; Zou, Yingbin; Di-qin, LI; Qin, Jianquan; Yang, Shuai; Chen, Lijun; Xia, Bing; Peng, Shaobing

doi:10.1016/j.fcr.2009.07.008

Cited by 182 publications

(119 citation statements)

References 14 publications

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“…LYPJ and YLY1 are two representatives of high-yielding cultivars developed from China's super hybrid rice breeding project [26]. HHZ has been widely grown by rice farmers in southern China because of its good grain quality.…”

Section: Plant and Treatmentsmentioning

confidence: 99%

Comparison on Grain Quality Between Super Hybrid and Popular Inbred Rice Cultivars Under Two Nitrogen Management Practices

Huang¹,

Shan²,

Chen³

et al. 2017

Advances in International Rice Research

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This study was conducted to determine the diferences in grain quality traits between super hybrid and popular inbred rice cultivars grown under two nitrogen (N) management practices. Field experiments were done at the Experimental Farm of Guangxi University, Guangxi Province, China in early and late rice-growing seasons in 2014. Two representative super hybrid cultivars Liangyoupeijiu (LYPJ) and Y-liangyou 1 (YLY1) and a popular inbred rice cultivar Huanghuazhan (HHZ) were grown under ixed-time N management (FTNM) and site-speciic N management (SSNM) practices in each season. Grain quality traits and N uptake were measured for each cultivar. LYPJ and YLY1 had higher milling eiciency, poorer appearance and palatability, and equal nutritional value than HHZ. The higher milling eiciency and poorer appearance in LYPJ and YLY1 were associated with their higher rice width compared with HHZ. Total N application rate was reduced by 15-20% under SSNM than under FTNM, whereas there was nearly no signiicant diference in grain quality between SSNM and FTNM. Our results suggest that (1) strategies for grain quality improvement in super hybrid rice should be focused on appearance and palatability, and (2) replacing FTNM with SSNM can reduce N input without sacriicing grain quality in rice production.

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Section: Plant and Treatmentsmentioning

confidence: 99%

Comparison on Grain Quality Between Super Hybrid and Popular Inbred Rice Cultivars Under Two Nitrogen Management Practices

Huang¹,

Shan²,

Chen³

et al. 2017

Advances in International Rice Research

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“…However, most results were from "super" hybrids (Cheng et al, 2007). In fact, many "super" hybrids often encounter adversity and exhibited lower seed setting rate, seriously affecting the performance of their yield potential , while high-yielding japonica can be adapted to a variety of conditions and has shown high seed setting rate (Jiao and Li, 2001;Zhang et al, 2009b;Yang and Zhang, 2010). It can be observed that increasing the intrinsic physiological functions of the rice, to improve the adaptability to adverse conditions, would be an important way to produce higher yields in rice.…”

Section: Discussionmentioning

confidence: 99%

Photosynthesis enhanced oxidative stress tolerance in high-yield rice varieties (Oryza sativa var. japonica L.) in the field

Xd¹

2016

Genet. Mol. Res.

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ABSTRACT. The objective of this study was to understand varietal differences in photosynthetic characteristics, chlorophyll fluorescence, antioxidant capability, and yield of japonica rice varieties. Nanjing 44, Oryza sativa var. japonica (average yield of 12.7 t/ha), Nanjing 46, and Nanjing 5055 (average yields of 11.3 and 11.5 t/ha) were included as "super" and high-yield varieties, respectively, whereas Wuyunjing 7 (average yield of 10.2 t/ha) was included as a control variety. These varieties were grown under field conditions in Jiangsu Province, China, in 2010-2012. Different organs (panicle, grain, etc.) were measured, before and after flowering, to identify differences of dry matter accumulation and transformation properties. Photosynthesis, the chlorophyll content, and antioxidant enzyme activities of the flag leaf in the days after flowering (DAF) were also investigated. The results showed that, compared with the other three rice varieties, Nanjing 44 had the highest plant dry weight and number of grains per panicle. It also had a relatively high net flag leaf photosynthetic rate and showed the least inhibition of photosynthesis at noon in DAF, which probably explains the higher yield in this variety. Furthermore, Nanjing 44 also had the highest stem export and conversion rate from stem to grain, exhibiting a strong ability to convert and distribute photosynthetic products. After DAF 42, Nanjing 44 still maintained a high-soluble protein content and a high antioxidant ability in the leaves to clear peroxidation products, which could protect the photosynthetic apparatus of the flag leaves, and maintain the grain-filling activity for longer. The high-yield capability of Nanjing 44 was attributed to its photosynthetic advantages in the leaves during the late developmental stage.

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“…These results, in agreement with previous reports (Lu et al, 1994;Yuan, 1994), indicated that poor spikelet filling was a result of low source capacity. It is commonly accepted that super hybrid cultivars have more spikelets per panicle than ordinary hybrid and inbred cultivars, which result in more spikelets per m 2 (Zhu et al, 2002;Peng et al, 2008;Zhang et al, 2009). Therefore, the source capacity should be emphasized to match the large sink size in super hybrid rice production, although source-sink relations were well balanced in China's super hybrid rice breeding project by improving photosynthesis and delaying leaf senescence of the top three leaves during the ripening phase .…”

Section: Resultsmentioning

confidence: 99%

“…Biomass production can be increased by increasing growth duration or crop growth rate or both (Yoshida, 1983). Zhang et al (2009) reported that longer growth duration was partly responsible for higher biomass production by super hybrid rice.…”

Section: Introductionmentioning

confidence: 99%

Performance of super hybrid rice cultivars grown under no-tillage and direct seeding

Huang

Zou

Jiang

et al. 2012

Sci. agric. (Piracicaba, Braz.)

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Yield potential and radiation use efficiency of “super” hybrid rice grown under subtropical conditions

Cited by 182 publications

References 14 publications

Comparison on Grain Quality Between Super Hybrid and Popular Inbred Rice Cultivars Under Two Nitrogen Management Practices

Comparison on Grain Quality Between Super Hybrid and Popular Inbred Rice Cultivars Under Two Nitrogen Management Practices

Photosynthesis enhanced oxidative stress tolerance in high-yield rice varieties (Oryza sativa var. japonica L.) in the field

Performance of super hybrid rice cultivars grown under no-tillage and direct seeding

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