Changes in the water content and germination rate during seed desiccation and their inter-specific differences among Zizania species

Il Doo Jin, Song Joong Yun, Yuko Matsuishi, Mari Iwaya-Inoue

Research output: Contribution to journalArticle

Abstract

Wild rice (Zizania palustris) is a newly cultivated crop that is known for its quality compounds of human health benefits. Zizania seeds are extremely sensitive to drought during the maturing and storage period. This study was conducted to examine the effect of seed water content on germination in three Zizania species, Z. aquatica, Z. latifolia and Z. palustris that have different morphological grain characteristics. Grain water content in the range of 9 to 83% showed a positive correlation with germination rate and speed. It was greatly affected by humidity during seed desiccation period. Seed water content was higher in the varieties or strains of larger grains than in those of smaller grains, also, in unhulled than in hulled grains. Seed water content decreased rapidly within 2 weeks of desiccation. Decreased seed water content was closely related to the decreased germination rate and speed in most Zizania species. Seed germination rate was maintained over 80% in water content over 35% in all Zizania species except for Z. latifolia from Sunchon bay that showed very low germination. However, seed germination at water content below 35% was significantly different by the seed size but not necessarily by the species. Seed viability of 50% was observed at 20% of seed water content in the small grain Z. aquatica from Virginia, while at about 10-13% of water contents in the large grain Z. aquatica from Iowa and Z. palustris. Taken together, the results from this study indicate that water content of mature wild rice seeds is a critical factor in germination, and it is affected mainly by humidity during seed maturation. Post-harvest practices to maintain seed water content in the range of 20 to 50% should improve wild rice seed viability.

Original languageEnglish
Pages (from-to)573-583
Number of pages11
JournalJournal of the Faculty of Agriculture, Kyushu University
Volume50
Issue number2
Publication statusPublished - Oct 1 2005

Fingerprint

Zizania
Desiccation
desiccation (plant physiology)
Germination
Seeds
germination
water content
Water
seeds
Zizania palustris
wild rice
Zizania latifolia
humidity
seed germination
Humidity
Zizania aquatica
viability
seed maturation

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

Cite this

Changes in the water content and germination rate during seed desiccation and their inter-specific differences among Zizania species. / Jin, Il Doo; Yun, Song Joong; Matsuishi, Yuko; Iwaya-Inoue, Mari.

In: Journal of the Faculty of Agriculture, Kyushu University, Vol. 50, No. 2, 01.10.2005, p. 573-583.

Research output: Contribution to journalArticle

@article{db101746cdd84152bc780abfa8a055f5,
title = "Changes in the water content and germination rate during seed desiccation and their inter-specific differences among Zizania species",
abstract = "Wild rice (Zizania palustris) is a newly cultivated crop that is known for its quality compounds of human health benefits. Zizania seeds are extremely sensitive to drought during the maturing and storage period. This study was conducted to examine the effect of seed water content on germination in three Zizania species, Z. aquatica, Z. latifolia and Z. palustris that have different morphological grain characteristics. Grain water content in the range of 9 to 83{\%} showed a positive correlation with germination rate and speed. It was greatly affected by humidity during seed desiccation period. Seed water content was higher in the varieties or strains of larger grains than in those of smaller grains, also, in unhulled than in hulled grains. Seed water content decreased rapidly within 2 weeks of desiccation. Decreased seed water content was closely related to the decreased germination rate and speed in most Zizania species. Seed germination rate was maintained over 80{\%} in water content over 35{\%} in all Zizania species except for Z. latifolia from Sunchon bay that showed very low germination. However, seed germination at water content below 35{\%} was significantly different by the seed size but not necessarily by the species. Seed viability of 50{\%} was observed at 20{\%} of seed water content in the small grain Z. aquatica from Virginia, while at about 10-13{\%} of water contents in the large grain Z. aquatica from Iowa and Z. palustris. Taken together, the results from this study indicate that water content of mature wild rice seeds is a critical factor in germination, and it is affected mainly by humidity during seed maturation. Post-harvest practices to maintain seed water content in the range of 20 to 50{\%} should improve wild rice seed viability.",
author = "Jin, {Il Doo} and Yun, {Song Joong} and Yuko Matsuishi and Mari Iwaya-Inoue",
year = "2005",
month = "10",
day = "1",
language = "English",
volume = "50",
pages = "573--583",
journal = "Journal of the Faculty of Agriculture, Kyushu University",
issn = "0023-6152",
publisher = "Faculty of Agriculture, Kyushu University",
number = "2",

}

TY - JOUR

T1 - Changes in the water content and germination rate during seed desiccation and their inter-specific differences among Zizania species

AU - Jin, Il Doo

AU - Yun, Song Joong

AU - Matsuishi, Yuko

AU - Iwaya-Inoue, Mari

PY - 2005/10/1

Y1 - 2005/10/1

N2 - Wild rice (Zizania palustris) is a newly cultivated crop that is known for its quality compounds of human health benefits. Zizania seeds are extremely sensitive to drought during the maturing and storage period. This study was conducted to examine the effect of seed water content on germination in three Zizania species, Z. aquatica, Z. latifolia and Z. palustris that have different morphological grain characteristics. Grain water content in the range of 9 to 83% showed a positive correlation with germination rate and speed. It was greatly affected by humidity during seed desiccation period. Seed water content was higher in the varieties or strains of larger grains than in those of smaller grains, also, in unhulled than in hulled grains. Seed water content decreased rapidly within 2 weeks of desiccation. Decreased seed water content was closely related to the decreased germination rate and speed in most Zizania species. Seed germination rate was maintained over 80% in water content over 35% in all Zizania species except for Z. latifolia from Sunchon bay that showed very low germination. However, seed germination at water content below 35% was significantly different by the seed size but not necessarily by the species. Seed viability of 50% was observed at 20% of seed water content in the small grain Z. aquatica from Virginia, while at about 10-13% of water contents in the large grain Z. aquatica from Iowa and Z. palustris. Taken together, the results from this study indicate that water content of mature wild rice seeds is a critical factor in germination, and it is affected mainly by humidity during seed maturation. Post-harvest practices to maintain seed water content in the range of 20 to 50% should improve wild rice seed viability.

AB - Wild rice (Zizania palustris) is a newly cultivated crop that is known for its quality compounds of human health benefits. Zizania seeds are extremely sensitive to drought during the maturing and storage period. This study was conducted to examine the effect of seed water content on germination in three Zizania species, Z. aquatica, Z. latifolia and Z. palustris that have different morphological grain characteristics. Grain water content in the range of 9 to 83% showed a positive correlation with germination rate and speed. It was greatly affected by humidity during seed desiccation period. Seed water content was higher in the varieties or strains of larger grains than in those of smaller grains, also, in unhulled than in hulled grains. Seed water content decreased rapidly within 2 weeks of desiccation. Decreased seed water content was closely related to the decreased germination rate and speed in most Zizania species. Seed germination rate was maintained over 80% in water content over 35% in all Zizania species except for Z. latifolia from Sunchon bay that showed very low germination. However, seed germination at water content below 35% was significantly different by the seed size but not necessarily by the species. Seed viability of 50% was observed at 20% of seed water content in the small grain Z. aquatica from Virginia, while at about 10-13% of water contents in the large grain Z. aquatica from Iowa and Z. palustris. Taken together, the results from this study indicate that water content of mature wild rice seeds is a critical factor in germination, and it is affected mainly by humidity during seed maturation. Post-harvest practices to maintain seed water content in the range of 20 to 50% should improve wild rice seed viability.

UR - http://www.scopus.com/inward/record.url?scp=27744441371&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27744441371&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:27744441371

VL - 50

SP - 573

EP - 583

JO - Journal of the Faculty of Agriculture, Kyushu University

JF - Journal of the Faculty of Agriculture, Kyushu University

SN - 0023-6152

IS - 2

ER -