Glutinous Rice and Its Importance for Hill Farmers in Laos

Röder, W.; Keoboulapha, B.; Vannalath, Khouanheuane; Phouaravanh, Bouakham

doi:10.1007/bf02866522

Cited by 35 publications

(23 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Traditional varieties are generally tall and thus have a low harvest index (Roder et al 1996, Saito et al 2006a). An exceptional variety was Tampi, which exhibited semi-dwarf traits with high culm strength.…”

Section: Discussionmentioning

confidence: 99%

“…These varieties are generally tall, with few tillers and a low harvest index, and suited to fertile soil (Roder et al 1996, 1997Saito et al2006a, Asai et al 2009b; moreover, these varieties achieve a yield performance of 3-4 t ha -1 under favorable conditions (Roder et al 1996, Saito et al 2006a, Asai et al 2009b), but perform very poorly when grown in fields with infertile soil, as many farmers are currently experiencing (Sengxua et al 2007, Saito et al 2006a, Asai et al 2009b. In screening trials in the Lao-IRRI project, several traditional indica varieties were identified as promising varieties with better yield than traditional tropical japonica checks under intensive continuous rice cropping systems (Linquist et al 2006).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Yield Performance of Upland Rice, Maize and Job’s Tears in a Rainfed Upland Ecosystem in Mountainous Laos

Asai

Soisouvanh

2017

JARQ

View full text Add to dashboard Cite

30% in the northern part (Inoue et al. 2005). Recent estimates indicated that 17% of the Laotian people still live in S&B agricultural areas, which cover 29% of the country (Messerli et al. 2009). Although the overall time trend variations in the extent of S&B agriculture have exhibited a gradual decrease at the national level, it still persists or has increased in certain rural areas, where the local poverty rate is considerably higher than the national JARQ 51 (4), 309-318 (2017) AbstractAdaptability to a wide range of environmental factors is a key for achieving stable production in the slash-and-burn (S&B) agriculture of mountainous Laos, where soil varies widely in productivity. Adaptability assessment based on the genotype by environment (GxE) interaction of grain yields in this study entailed an investigation of the yield performance of maize, Job's tears, and seven varieties of upland rice including improved variety B6144F-MR-6-0-0 (B6144), at eleven locations under rainfed upland conditions. Across the eleven locations, the mean yields of upland rice ranged widely from 56 to 583 g m -2 . While the GxE interaction was significant, one improved indica variety (B6144) produced high grain yields at all eleven locations. Under low-yielding conditions (56 to 205 g m -2 of upland rice), four indica varieties consistently performed with more stable yield performance than three tropical japonica varieties, the poor adaptation of which was attributed to reduced grain number per panicle and the grain-filling ratio. Under moderate-and high-yielding conditions (284 to 583 g m -2), two semi-dwarf varieties -Tampi (tropical japonica) and B6144 (indica) -exhibited the highest productivity due to a higher harvest index (0.40-0.41) compared with the others (0.28 -0.34), but B6144 likely exhibited lodging signs under fertile soil conditions, where the mean yields were above 360 g m -2 . The GxE interaction effect was highly significant among the three upland crops; relative to upland rice, maize was particularly better adapted to moderate-and high-yielding conditions, whereas Job's tears adapted better to low-yielding conditions. Job's tears exhibited stable yield performance across all eleven locations. In contrast, maize had higher yield compared with all upland rice varieties under the adapted conditions, although the upland rice varieties had higher yields compared with maize under unadapted conditions. In conclusion, Job's tears or indica varieties are recommended for growth under low-yielding conditions, and maize or semi-dwarf cultivars are recommended under high-yielding conditions. And with possibly more lodging resistance, the improved indica variety B6144 could be the ideal variety adaptable to a wide range of soil fertility.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Yield Performance of Upland Rice, Maize and Job’s Tears in a Rainfed Upland Ecosystem in Mountainous Laos

Asai

Soisouvanh

2017

JARQ

View full text Add to dashboard Cite

show abstract

“…The main staple food was sticky rice (Oryza sativa var. glutinosa) which has a lower amylase content than normal white rice (Roder et al 1996). Weaknesses in the 24 hour recall, and in particular the memory bias that tends to over or underestimate the amounts of foods eaten are acknowledged.…”

Section: Discussionmentioning

confidence: 99%

Progressive growth deterioration in a context of nutritional transition: A case study from Vientiane (Lao PDR)

Bénéfice

Lévi

Banouvong

2012

Annals of Human Biology

View full text Add to dashboard Cite

show abstract

“…Waxy rice contains no amylose due to a mutation in the Waxy gene 2 . The Green Revolution, which changed ricegrowing in so many countries, had little or no impact in Lao PDR because the germplasm of the Green Revolution was non-waxy, so it was not adopted by Lao rice farmers or consumers because they prefer glutinous rice 3 . For many years, Lao farmers have preserved and cultivated a diverse suite of traditional waxy varieties.…”

Section: Introductionmentioning

confidence: 99%

Untitled

Boualaphanh¹,

Calingacion²,

Cuevas³

et al. 2011

ScienceAsia

View full text Add to dashboard Cite

Improvements in its political and tourism sectors have encouraged Lao PDR to explore export options for its traditional waxy rice varieties. As such, farmers and agriculturists are exploring ways to enhance yield and capture high-quality traits into improved varieties such as Thasano1 (TSN1) and Thadokkham1 (TDK1). In this study, the effects of nitrogen (N) on yield and quality traits were investigated in two traditional varieties, Hom Nang Nouane (HNN) and Kai Noy Leuang (KNL), and in two popular improved varieties, TDK1 and TSN1. The plants were cultivated during the 2006 wet season at the Rice and Cash Crop Research Centre, NAFRI, Lao PDR, and were subjected to four N rates. Results showed that while increased N rates enhanced yields and yield components in TDK1 and TSN1, the two traditional varieties, HNN and KNL, were not as responsive. In contrast, the quality traits assessed in this study of the four varieties were not affected by N. Yield and textural attributes further suggest that TSN1 is a better candidate than TDK1 for breeding programs aimed at combining quality traits from HNN and KNL into improved varieties.

show abstract

Glutinous Rice and Its Importance for Hill Farmers in Laos

Cited by 35 publications

References 2 publications

Yield Performance of Upland Rice, Maize and Job’s Tears in a Rainfed Upland Ecosystem in Mountainous Laos

Yield Performance of Upland Rice, Maize and Job’s Tears in a Rainfed Upland Ecosystem in Mountainous Laos

Progressive growth deterioration in a context of nutritional transition: A case study from Vientiane (Lao PDR)

Untitled

Contact Info

Product

Resources

About