Abstract
Aroma quality of rice in addition to determined by genetic factor is also influenced by environmental factors. One of those that significantly affected the aroma quality of aromatic upland rice is soil moisture. The stronger fragrant aroma of rice often occurs at relatively low soil moisture level, so that the grain obtained relatively low, So that when the aroma quality of rice increases, the grain yield is lower. The purpose of this research is to know the influence of soil moisture to both growth and yield components, yield as well as the aroma quality of three local varieties of aromatic upland rice from South West Sumba. The experiment was carried out factorially in a split-plot design with three replications. The first factor was the level of soil moisture with four levels, namely: 100%, 80%, 60% and 40% FC and the second factor was local varieties, namely: Lapale Kuhi, Kiku Lapale, and Panenggo. The observed variables included: vegetative and reproductive characters, physiological characters and aroma quality. The data collected were analyzed by analysis of variance followed by the Honestly Significant Difference (HSD) Test at a 5% significance level. The results showed that: 1) Yield components and grain yield were the highest at 100% Field Capacity (FC) soil moisture level, and they were significantly lower at 40% FC soil moisture level, 2) Soil moisture level also significantly affected physiological characters, namely: N, Na, proline contents , and aroma quality of rice, 3) Decreasing the level of soil moisture reduces N content of leaves tissue, increases Na and proline contents of leaves tissue. Aroma score of rice increased with a decrease in soil moisture level, whereas 2-AP compound content of rice increased at soil moisture level 80 % FC and reduced both at 60% FC and 40% FC..
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Claims 8
Claim · model-written summary
Rice yield components and grain yield were highest at 100% FC and significantly lower at 40% FC.
- Taxon
- RICE
Oryza sativat0 - Treatment
- 100% Field Capacity (FC) soil moisture levele0
- Outcome
- Yield components and grain yielde0
- Direction
- higheste0
- Comparator
- 40% FC soil moisture levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield components and grain yield were the highest at 100% Field Capacity (FC) soil moisture level, and they were significantly lower at 40% FC soil moisture level”
t0“RICE”
Claim · model-written summary
Lower soil moisture reduced leaf N content.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing the level of soil moisturee0
- Outcome
- N content of leaves tissuee0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreasing the level of soil moisture reduces N content of leaves tissue”
t0“RICE”
Claim · model-written summary
Lower soil moisture increased leaf Na content.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing the level of soil moisturee0
- Outcome
- Nae0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreasing the level of soil moisture reduces N content of leaves tissue, increases Na and proline contents of leaves tissue”
t0“RICE”
Claim · model-written summary
Lower soil moisture increased leaf proline content.
- Taxon
- RICEOryza sativat0
- Treatment
- Decreasing the level of soil moisturee0
- Outcome
- proline contents of leaves tissuee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreasing the level of soil moisture reduces N content of leaves tissue, increases Na and proline contents of leaves tissue”
t0“RICE”
Claim · model-written summary
Rice aroma score increased as soil moisture decreased.
- Taxon
- RICEOryza sativat0
- Treatment
- decrease in soil moisture levele0
- Outcome
- Aroma score of ricee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aroma score of rice increased with a decrease in soil moisture level”
t0“RICE”
Claim · model-written summary
Rice 2-AP content increased at 80% FC.
- Taxon
- RICEOryza sativat0
- Treatment
- soil moisture level 80 % FCe0
- Outcome
- 2-AP compound content of ricee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-AP compound content of rice increased at soil moisture level 80 % FC”
t0“RICE”
Claim · model-written summary
Rice 2-AP content declined at 60% FC.
- Taxon
- RICEOryza sativat0
- Treatment
- 60% FCe0
- Outcome
- 2-AP compound content of ricee1
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced both at 60% FC and 40% FC”
e1“2-AP compound content of rice increased at soil moisture level 80 % FC”
t0“RICE”
Claim · model-written summary
Rice 2-AP content declined at 40% FC.
- Taxon
- RICEOryza sativat0
- Treatment
- 40% FCe0
- Outcome
- 2-AP compound content of ricee1
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced both at 60% FC and 40% FC”
e1“2-AP compound content of rice increased at soil moisture level 80 % FC”
t0“RICE”
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