Advances in improving tolerance to waterlogging in Brachiaria grasses

被引：8

作者：

Cardoso, Juan A. ^{[1
]}

Jimenez, Juan ^{[1
]}

Rincon, Joisse ^{[1
]}

Guevara, Edward ^{[1
]}

Van der Hoek, Rein ^{[1
]}

Jarvis, Andy ^{[1
]}

Peters, Michael ^{[1
]}

Miles, John ^{[1
]}

Ayarza, Miguel ^{[2
]}

Cajas, Socorro ^{[2
]}

Rincon, Alvaro ^{[2
]}

Mateus, Henry ^{[2
]}

Quiceno, Jaime ^{[2
]}

Barragan, Wilson ^{[2
]}

Lascano, Carlos ^{[2
]}

Argel, Pedro ^{[2
]}

Mena, Martin ^{[3
]}

Hertentains, Luis ^{[4
]}

Rao, Idupulapati ^{[1
]}

机构：

[1] CIAT, Apartado Aereo 6713, Cali, Colombia

[2] Corporac Colombiana Invest Agr, Bogota, Colombia

[3] INTA, Managua, Nicaragua

[4] IDIAP, Panama City, Panama

来源：

TROPICAL GRASSLANDS-FORRAJES TROPICALES | 2013年 / 1卷 / 02期

关键词：

Tropical grasses; poor soil drainage; root aeration traits; screening; participatory evaluation;

D O I：

10.17138/TGFT(1)197-201

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

An inter-institutional and multi-disciplinary project to identify Brachiaria genotypes, which combine waterlogging tolerance with high forage yield and quality, for use in agricultural land in Latin America with poor drainage, is underway. The aim is to improve meat and milk production and mitigate the impacts of climate change in the humid areas of Latin America. Researchers at the International Center for Tropical Agriculture (CIAT) have developed a screening method to evaluate waterlogging in grasses. Using this method, 71 promising hybrids derived from the species, Brachiaria ruziziensis, B. brizantha and B. decumbens, were evaluated. Four hybrids with superior waterlogging tolerance were identified. Their superiority was based on greater: green-leaf biomass production, proportion of green leaf to total leaf biomass, green-leaf area, leaf chlorophyll content and photosynthetic efficiency; and reduced dead-leaf biomass. These hybrids, together with previously selected hybrids and germplasm accessions, are being field-tested for waterlogging tolerance in collaboration with National Agricultural Research Institutions and farmers from Colombia, Nicaragua and Panama.

引用

页码：197 / 201

页数：5

共 13 条

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