Developing perennial upland rice II: Field performance of S1 families from an intermated Oryza sativa/O. longistaminata population

Erik J. Sacks, Jose P. Roxas, Maria Teresa Maria

Research output: Contribution to journalArticle

Abstract

In Southeast Asia, upland rice (Oryza sativa L.) is an annual crop that is typically cultivated on hilly sites, contributing to the erosion of soil and the degradation of watersheds. We wish to develop a perennial upland rice that would help conserve natural resources via a permanent ground cover, while providing subsistence farmers with a valued food. Oryza longistaminata A. Chev. et Roehr. is a highly perennial, rhizomatous relative of O. sativa that may be a useful source of genes for developing perennial upland rice. This study was conducted to evaluate the potential of an O. sativa/O. longistaminata intermated population for developing perennial upland rice. As a baseline for comparison, none of the cultivar controls survived 1 yr. Among 94 S1 families, 1-yr survival ranged from 0 to 63.6% but only six families had more than 30% survival. On the basis of observations at the soil surface, less than 1% of the progeny plants produced rhizomes. However, three families produced approximately 25% rhizomatous individuals, suggesting the presence of a single locus with large effect. Interspecific crossing barriers led to low S1 yields, with many plants being completely sterile. The low fertility and limited perenniality observed may make further breeding progress with this population difficult.

Original languageEnglish (US)
Pages (from-to)129-134
Number of pages6
JournalCrop Science
Volume43
Issue number1
StatePublished - Jan 1 2003
Externally publishedYes

Fingerprint

Oryza longistaminata
Oryza sativa
highlands
rice
South East Asia
soil erosion
natural resources
rhizomes
soil fertility
farmers
loci
degradation
breeding
cultivars
crops
soil
genes

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Developing perennial upland rice II : Field performance of S1 families from an intermated Oryza sativa/O. longistaminata population. / Sacks, Erik J.; Roxas, Jose P.; Maria, Maria Teresa.

In: Crop Science, Vol. 43, No. 1, 01.01.2003, p. 129-134.

Research output: Contribution to journalArticle

@article{26fa893ccecf49a28bdffeb87189996c,
title = "Developing perennial upland rice II: Field performance of S1 families from an intermated Oryza sativa/O. longistaminata population",
abstract = "In Southeast Asia, upland rice (Oryza sativa L.) is an annual crop that is typically cultivated on hilly sites, contributing to the erosion of soil and the degradation of watersheds. We wish to develop a perennial upland rice that would help conserve natural resources via a permanent ground cover, while providing subsistence farmers with a valued food. Oryza longistaminata A. Chev. et Roehr. is a highly perennial, rhizomatous relative of O. sativa that may be a useful source of genes for developing perennial upland rice. This study was conducted to evaluate the potential of an O. sativa/O. longistaminata intermated population for developing perennial upland rice. As a baseline for comparison, none of the cultivar controls survived 1 yr. Among 94 S1 families, 1-yr survival ranged from 0 to 63.6{\%} but only six families had more than 30{\%} survival. On the basis of observations at the soil surface, less than 1{\%} of the progeny plants produced rhizomes. However, three families produced approximately 25{\%} rhizomatous individuals, suggesting the presence of a single locus with large effect. Interspecific crossing barriers led to low S1 yields, with many plants being completely sterile. The low fertility and limited perenniality observed may make further breeding progress with this population difficult.",
author = "Sacks, {Erik J.} and Roxas, {Jose P.} and Maria, {Maria Teresa}",
year = "2003",
month = "1",
day = "1",
language = "English (US)",
volume = "43",
pages = "129--134",
journal = "Crop Science",
issn = "0011-183X",
publisher = "Crop Science Society of America",
number = "1",

}

TY - JOUR

T1 - Developing perennial upland rice II

T2 - Field performance of S1 families from an intermated Oryza sativa/O. longistaminata population

AU - Sacks, Erik J.

AU - Roxas, Jose P.

AU - Maria, Maria Teresa

PY - 2003/1/1

Y1 - 2003/1/1

N2 - In Southeast Asia, upland rice (Oryza sativa L.) is an annual crop that is typically cultivated on hilly sites, contributing to the erosion of soil and the degradation of watersheds. We wish to develop a perennial upland rice that would help conserve natural resources via a permanent ground cover, while providing subsistence farmers with a valued food. Oryza longistaminata A. Chev. et Roehr. is a highly perennial, rhizomatous relative of O. sativa that may be a useful source of genes for developing perennial upland rice. This study was conducted to evaluate the potential of an O. sativa/O. longistaminata intermated population for developing perennial upland rice. As a baseline for comparison, none of the cultivar controls survived 1 yr. Among 94 S1 families, 1-yr survival ranged from 0 to 63.6% but only six families had more than 30% survival. On the basis of observations at the soil surface, less than 1% of the progeny plants produced rhizomes. However, three families produced approximately 25% rhizomatous individuals, suggesting the presence of a single locus with large effect. Interspecific crossing barriers led to low S1 yields, with many plants being completely sterile. The low fertility and limited perenniality observed may make further breeding progress with this population difficult.

AB - In Southeast Asia, upland rice (Oryza sativa L.) is an annual crop that is typically cultivated on hilly sites, contributing to the erosion of soil and the degradation of watersheds. We wish to develop a perennial upland rice that would help conserve natural resources via a permanent ground cover, while providing subsistence farmers with a valued food. Oryza longistaminata A. Chev. et Roehr. is a highly perennial, rhizomatous relative of O. sativa that may be a useful source of genes for developing perennial upland rice. This study was conducted to evaluate the potential of an O. sativa/O. longistaminata intermated population for developing perennial upland rice. As a baseline for comparison, none of the cultivar controls survived 1 yr. Among 94 S1 families, 1-yr survival ranged from 0 to 63.6% but only six families had more than 30% survival. On the basis of observations at the soil surface, less than 1% of the progeny plants produced rhizomes. However, three families produced approximately 25% rhizomatous individuals, suggesting the presence of a single locus with large effect. Interspecific crossing barriers led to low S1 yields, with many plants being completely sterile. The low fertility and limited perenniality observed may make further breeding progress with this population difficult.

UR - http://www.scopus.com/inward/record.url?scp=0037237074&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037237074&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0037237074

VL - 43

SP - 129

EP - 134

JO - Crop Science

JF - Crop Science

SN - 0011-183X

IS - 1

ER -