Upland rice varieties for smallholder farming in the cold conditions in Madagascar's tropical highlands

Raboin, Louis-Marie; Randriambololona, Tahiry; Radanielina, Tendro; Ramanantsoanirina, Alain; Ahmadi, Nourollah; Dusserre, Julie

doi:10.1016/j.fcr.2014.09.006

Cited by 45 publications

(31 citation statements)

References 29 publications

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“…Saito & Futakuchi, 2009;Touré et al, 2011 argued that, in comparison with their parents, NERICA varieties did not have superior 2013,2014). This variety clearly showed yield advantage over varieties released in the 1990s and 2000s in field trials (Raboin et al, 2014), and its higher yield was attributed to higher leaf area index, high harvest index, and long duration; it also has weed-suppressive ability. Chhomrong Dhan now accounts for more than 80% of upland rice area in Madagascar, and has been used as donor in recent breeding.…”

Section: Sub-saharan Africamentioning

confidence: 99%

“…Typical major abiotic and biotic stresses include cold stress in highlands (Ahmadi et al, 2004;Raboin et al, 2014), drought (Kijima et al, 2011;Niang et al, 2017Niang et al, , 2018Saito et al, 2013Saito et al, , 2017, soil-related problems including acidity and N and P deficiency (Asai et al, 2009;Haefele et al, 2014;Okada & Fischer, 2001;Saito, Linquist, Keobualapha, et al, 2006;Saito et al, 2007Saito et al, , 2013, weeds (Becker & Johnson, 2001;, and soil-borne pests such as nematodes (Balasubramanian et al, 2007). There are also large year-to-year variations in abiotic and biotic stresses due to climate conditions (such as rainfall pattern), which could lead to reduced investment by farmers in inputs and result in larger yield gaps .…”

Section: Introductionmentioning

confidence: 99%

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Progress in varietal improvement for increasing upland rice productivity in the tropics

Saito

Asai

Zhao

et al. 2018

Plant Production Science

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Enhancing rice yield in upland rice systems through genetic improvement remains a major challenge in the tropics. This review aims to provide the trends on upland rice cultivation over the last 30 years and recent distribution of upland rice in the tropics, and to report progress in studies on genetic improvement for enhancing productivity in Africa, Asia, and Latin America. While upland rice cultivation area has reduced in Asia and Latin America over the last 30 years, the area in Africa has increased. The current share of upland rice area in total rice area is related to rainfall and gross national income per capita, especially in Africa, and higher share is associated with lower rice selfsufficiency at national level. Breeding programs in Asia and Latin America have developed highyielding varieties using indica materials as parents. In Africa, New Rice for Africa (NERICA) varieties were developed from crosses between improved tropical japonica and Oryza glaberrima. However, recent studies report that there is scope for improving existing NERICA using upland indica materials from Asia. In highlands of Africa, there are ongoing breeding programs using japonica varieties, such as the Nepalese Chhomrong Dhan. Key important plant traits used in the breeding programs are not largely different across regions, especially intermediate plant height and tillering capacity (which may be related to weed-suppressive ability), and high harvest index. In conclusion, we propose an international network for breeding upland rice with accelerating seed exchange across regions that could enhance upland rice productivity through genetic improvement.

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Section: Sub-saharan Africamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Progress in varietal improvement for increasing upland rice productivity in the tropics

Saito

Asai

Zhao

et al. 2018

Plant Production Science

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“…Les produits (output) principaux de ces travaux sont bien entendu les variétés qui ont permis la culture du riz pluvial dans les zones d'altitude. Vingt variétés ont été sélectionnées et proposées aux paysans depuis 1995 (Raboin et al, 2013(Raboin et al, , 2014.…”

Section: Un Rôle De La Recherche Déterminant Au Démarrage Puis Qui S'unclassified

“…En 2011, la culture du riz pluvial d'altitude (RPA) concernait 71 % des exploitations du Vakinankaratra situées au-dessus de 1250 m (limite audessus de laquelle le froid provoquait un haut niveau de stérilité sur les variétés antérieures) et jusqu'à plus de 1800 m d'altitude ( Fig. 1 ; Raboin et al, 2014).…”

Section: Introductionunclassified

Évaluation participative des impacts de la recherche sur le riz pluvial d’altitude à Madagascar de 1980 à 2015

et al. 2018

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Évaluer les impacts des recherches en agriculture sur la société : outils, méthodes, études de cas. Résumé -Le riz est l'aliment de base des Malgaches. Mais, sur les Hautes Terres de Madagascar, très fortement peuplées, les rizières ne permettent plus de couvrir les besoins en riz. Un programme de création variétale a été initié en 1984 par le FOFIFA et le CIRAD qui a abouti à la création de variétés de riz pluvial adaptées à l'altitude. Ces variétés ont permis le développement très rapide de la riziculture pluviale jusqu'à plus de 1800 m d'altitude. Une étude de l'impact de ces recherches a été réalisée avec la méthodologie « IMPRESS » (IMPact des REchercheS au Sud) du CIRAD qui se focalise sur l'évaluation participative des impacts et met en exergue la perception des changements par les agriculteurs. La réduction de la période de soudure et de la contrainte d'acheter du riz a été l'impact le plus important aux yeux des producteurs. Un impact assez inattendu qui en découle a aussi été évoqué de façon unanime : « l'augmentation de la tranquillité d'esprit ». L'approche participative a permis une compréhension fine de l'amélioration de la situation individuelle des exploitants.Mots clés : évaluation de l'impact / riz pluvial / Hautes Terres / amélioration génétique / autosuffisance alimentaire Abstract -Participatory evaluation of the impact of research on upland rice for Madagascar highlands from 1980 to 2015. Rice is the staple food for Malagasy people. However, in the densely populated Madagascar highlands, irrigated rice fields no longer meet the rice needs. A joint breeding program was launched in 1984 by FOFIFA and CIRAD that led to the creation of upland rice varieties adapted to high altitude conditions. These varieties allowed the rapid development of upland rice cropping up to 1800 m asl. An evaluation of the impact of this research was carried out following the CIRAD methodology "IMPRESS" (IMPact of RESearch in the South), that relies on the perception of changes by the farmers themselves. The shortening of the hunger gap and the reduction of the necessity to buy rice was the most important impact in farmers' eyes. An unexpected impact resulting from the previous one was also unanimously expressed: "the increase of peace of mind". The participatory approach allowed a fine understanding of the improvement of the individual situation of farmers.

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“…Upland rainfed rice is a recent crop in the densely populated highlands of Madagascar, whose altitude ranges from 1400 to 1800 m above sea level (m asl), making it possible to increase the area under rice production and to improve the food security of farm households. The first cultivars released to farmers during the 1990 s were rapidly attacked by blast (Raboin et al, 2014) and the disease continues to be a constraint for any new cultivar developed and released in the region. Today, there is a race between breeders and blast: breeders have to rapidly produce new cultivars and find new sources of resistance, because blast rapidly adapts to any new resistant cultivars and is simultaneously becoming increasingly aggressive.…”

Section: Introductionmentioning

confidence: 99%

Difference in blast development in upland rice grown on an Andosol vs a Ferralsol

et al. 2019

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Upland rice varieties for smallholder farming in the cold conditions in Madagascar's tropical highlands

Cited by 45 publications

References 29 publications

Progress in varietal improvement for increasing upland rice productivity in the tropics

Progress in varietal improvement for increasing upland rice productivity in the tropics

Évaluation participative des impacts de la recherche sur le riz pluvial d’altitude à Madagascar de 1980 à 2015

Difference in blast development in upland rice grown on an Andosol vs a Ferralsol

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