Eco-Physiological Characteristics Related with Lodging Tolerance of Rice in Direct Sowing Cultivation. II. Root growth characteristics of tolerant cultivars to root lodging.

Terashima, Kazuo; Ogata, Takefumi; Akita, Shigemi

doi:10.1626/jcs.63.34

Cited by 40 publications

(26 citation statements)

References 2 publications

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“…Previous studies stated that root system was responsible for lodging in rice plant. Higher lodging resistance would require heavier roots and deeper root system (Terashima et al, 1994;Feng-zhuan at al., 2010). Therefore with better root growth in IT management it could improve lodging resistant of rice plant.…”

Section: Discussionmentioning

confidence: 99%

Influence of Water Management and Silica Application on Rice Growth and Productivity in Central Java, Indonesia

Siregar¹,

Sipahutar²,

Husnain³

et al. 2016

JAS

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Rice cultivation in our study site at Central Java, Indonesia, is constrained by water scarcity and blast disease problems. A field experiment was thus conducted to evaluate the effect of water management and silicon (Si) application (with 500 kg ha -1 of silica gel) on improving rice growth and productivity and blast disease infection in Jakenan, Central Java. Split plot in randomized complete block design with 4 replications was used. The results showed that two water saving methods, intermittent (IT) and aerobic rice (AR) increased rice yield compared to conventional flooding water management. Further, IT showed better root growth and hence lodging resistance and decreased blast disease infection. IT had higher yield potential compared to AR although the yield of IT and AR were not statistically different. Si application gave significant effect on reducing leaf and neck blast infection and also increased stomata density (p < 0.01) in all water treatments. Si application did not result in increased yield but exhibited potential towards improving rice plant growth and production. Since Si fertilizer was never used in rice cultivation in Indonesia, the study reveals that IT combine with Si application was a suitable management for rice production in dry season in water limited Central Java region.

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Section: Discussionmentioning

confidence: 99%

Influence of Water Management and Silica Application on Rice Growth and Productivity in Central Java, Indonesia

Siregar¹,

Sipahutar²,

Husnain³

et al. 2016

JAS

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“…Maximum diagonal of 4 th inter-node was for Sangh Tarom with 40 bushes per m² and minimum of it were for local Tarom and Dilamani Tarom with 80 bushes per m². Islam and et al (2007) reported that length or height of stem had a positive coefficient with diagonal of 4 inter-node, length of inter-nodes 1 st , 2nd, 3rd, and 4 th and Lodging resistance of 3 rd and 4 th inter-nodes, but it had not significantly correlation with weight of dry matter, Stem tension to lodging and lodging index of 3 rd and 4 th inter-nods.…”

Section: The Effect Of Variety Plant Density and Their Interaction Omentioning

confidence: 95%

“…Morphologic characteristics of lodging index was only measured for 3 rd and 4 th inter-nodes, because lodging of stem took place in low inter-nodes (Hoshikawa and Wang, 1990;Seko, 1962). Morphological characteristics have significantly correspondence between 3 rd and 4 th inter-nodes; therefore Lodging resistance and lodging index of these inter-nodes are important in lodging matter (Islam et al, 2007).…”

Section: Effect Of Variety and Interaction Of Variety × Plant Densitymentioning

confidence: 98%

Effect of Plant Density on Morphologic Characteristics Related to Lodging and Yield Components in Different Rice Varieties (Oriza Sativa L.)

Yadi¹,

Siavoshi²,

Mobasser³

et al. 2011

JAS

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In order to study the effects of plant density on agronomical and morphologic characteristics which are related to the lodging in rice varieties, an experiment was carried out in 2008 in split plot in randomized complete block design based on 4 replications in Iran. In this experiment, five rice varieties of Tarom (Local, Hashemi, Dilamani, Langhrodi and Sangh) were chosen as main factors and three plant density levels (40, 80, and 120 bushes per m²) as sub-factors. The results showed that Langhrodi Tarom had minimum total number of spikelets and number of hollow spikelets per panicle and minimum tiller per bush and number of panicles per m² had seen sequentially in Local Tarom and Sangh Tarom. The shortest length of first, second, and third inter-nodes, longest diagonal of the third inter-node and minimum plant height obtained for Langhrodi Tarom. Number of node and length of first, second and third inter-node and diagonal of the forth inter-node and Stem tension to lodging in third and forth inter-node decreased as plant density increased. Minimum lodging index of the third and forth inter-node came out at 80 bushes per m². Interaction effects in plant density had significant effects on all parameters except panicle number per m².

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“…In addition, while the stiff stems of modern cereal resist buckling, reducing incidence of stem lodging, they can transmit the forces generated by wind action into the ground-forces which can cause root lodging in which the root system rotates in the soil [14]. Studies confirmed that during rice growth, after stem lodging, root lodging is the next greatest lodging risk, and also proved that the larger roots system and thicker crown roots in subsoil were the very important characteristics for anti-lodging for root [15,16]. Although most studies approved that elevated [CO 2 ] promoted root growth, and increased the root volume, root biomass of rice [17,18], no study has examined the risk of root lodging under elevated [CO 2 ].…”

mentioning

confidence: 92%

Effects of elevated [CO2] on stem and root lodging among rice cultivars

et al. 2013

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Studies showed that elevated [CO 2 ] would improve photosynthetic rates and enhance yields of rice; however, few studies have focused on the response of rice lodging, which is a major cause of cereal yield loss and quality reduction, under elevated [CO 2 ]. In this study, we examined the effects of elevated [CO 2 ] on stem and root lodging using 4 rice cultivars (86Y8, japonica hybrid; LYP9, 2-line indica hybrid; variety 9311, type of indica inbred rice, and SY63, 3-line indica hybrid) grown under two [CO 2 ] levels: 400 and 680 µmol mol -1 . Our results indicated that under elevated [CO 2 ], the stem-lodging risk (SLR) of 9311 decreased, while in SY63 the SLR increased, 86Y8 and LYP9 were not significantly affected; the risk of root lodging was reduced for all cultivars, because root biomass (instead of root number) and bending strength were increased significantly, and then the increase of anti-lodging ability is far higher than that of self-weight mass moment for all cultivars. These findings suggested that higher [CO 2 , because it directly decreases canopy photosynthesis and disturbs the translocation of C and N within shoot and root [7,8]. Setter et al.[9] demonstrated that in rice, yield losses can be as much as 1% for every 2% of stem that has lodged. Hence, if lodging risk is increased in rice under elevated [CO 2 ], the potential for increases in yield would be limited [9]. A better understanding of the mechanisms for lodging response will be helpful to reduce the incidence of lodging under elevated [CO 2 ] by enabling plant breeders to choose those characteristics in rice which are expected to increase lodging resistance, and increase food security. Lodging is accelerated by heavier panicles and longer culms, which increases the plant's mass moment (mass multiplied by distance from the point of attachment). Elevated [CO 2 ] has been shown to increase the rate of grain filling and the final weight of the panicles as a result of increased panicle size [3,4]. During the grain-filling period, panicle weight under

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Eco-Physiological Characteristics Related with Lodging Tolerance of Rice in Direct Sowing Cultivation. II. Root growth characteristics of tolerant cultivars to root lodging.

Cited by 40 publications

References 2 publications

Influence of Water Management and Silica Application on Rice Growth and Productivity in Central Java, Indonesia

Influence of Water Management and Silica Application on Rice Growth and Productivity in Central Java, Indonesia

Effect of Plant Density on Morphologic Characteristics Related to Lodging and Yield Components in Different Rice Varieties (Oriza Sativa L.)

Effects of elevated [CO2] on stem and root lodging among rice cultivars

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