Abstract
The grain filling processes of paddy rice and upland rice under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC) were fitted by Richards growth equation to study the difference in grain filling properties between the two types of rice. Results showed that effective panicles and grain weight of paddy rice decreased significantly under DC compared to those under PC,leading to significant reduction in grain yield of paddy rice under DC. In comparison with PC, DC reduced grain filling rates of both the superior and inferior grains, shortened active grain filling period, weakened initial grain filling potential of both the superior and medium grains and delayed occurrence of the maximum grain filling rate of paddy rice. In addition, under the DC condition, paddy rice had small difference in the time reaching the maximum grain filling rate between superior grains and inferior ones, so the grain filling of the inferior grains was worsened. Moreover, the difference in grain filling rate between the superior grains and inferior ones was further enlarged in paddy rice under DC relative to PC. As a result, paddy rice had lower seed setting rate and grain weight under DC than those under PC. Less variations in grain filling, grain yield and its components between DC and PC were found in upland rice relative to paddy rice. Compared to paddy rice, upland rice showed lower initial grain filling potential, especially for the superior and medium grains, stronger competition for assimilates in both superior and medium grains at early and middle filling stages, leading to less availability of assimilates to the inferior grains, which could be attributed to low seed setting rate, grain weight and finally low yield. Results also showed that upland rice had the less variation in the parameters related to grain filling processes in comparison with paddy rice under DC. Under the DC condition, the lower grain filling rate and longer active grain filling period were found in paddy rice relative to upland rice. Thus paddy rice showed greater difference in synchronism of grain filling between the superior and inferior grains relative to upland rice.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 16
Claim · model-written summary
DC reduced grain filling rates of both the superior and inferior grains of paddy rice relative to PC.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e4“In comparison with PC, DC reduced grain filling rates of both the superior and inferior grains, shortened active grain filling period, weakened initial grain filling potential of both the superior and medium grains and delayed occurrence of the maximum grain filling rate of paddy rice”
Claim · model-written summary
DC shortened the active grain filling period of paddy rice relative to PC.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e4“In comparison with PC, DC reduced grain filling rates of both the superior and inferior grains, shortened active grain filling period, weakened initial grain filling potential of both the superior and medium grains and delayed occurrence of the maximum grain filling rate of paddy rice”
Claim · model-written summary
DC weakened initial grain filling potential of both the superior and medium grains of paddy rice.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e4“In comparison with PC, DC reduced grain filling rates of both the superior and inferior grains, shortened active grain filling period, weakened initial grain filling potential of both the superior and medium grains and delayed occurrence of the maximum grain filling rate of paddy rice”
Claim · model-written summary
DC delayed the occurrence of the maximum grain filling rate of paddy rice.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e4“In comparison with PC, DC reduced grain filling rates of both the superior and inferior grains, shortened active grain filling period, weakened initial grain filling potential of both the superior and medium grains and delayed occurrence of the maximum grain filling rate of paddy rice”
Claim · model-written summary
Under DC, paddy rice had a small difference in the time to maximum grain filling rate between superior and inferior grains.
Verbatim
t0“Paddy Rice and Upland Rice”
e5“under the DC condition, paddy rice had small difference in the time reaching the maximum grain filling rate between superior grains and inferior ones, so the grain filling of the inferior grains was worsened”
Claim · model-written summary
Under DC, grain filling of the inferior grains of paddy rice was worsened.
- Taxon
- paddy ricet0
- Treatment
- plastic film mulched dry cultivation (DC)e3
- Outcome
- the grain filling of the inferior grainse5
- Direction
- worsenede5
Not reportedComparator
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e5“under the DC condition, paddy rice had small difference in the time reaching the maximum grain filling rate between superior grains and inferior ones, so the grain filling of the inferior grains was worsened”
Claim · model-written summary
The difference in grain filling rate between superior and inferior grains was further enlarged in paddy rice under DC relative to PC.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e6“the difference in grain filling rate between the superior grains and inferior ones was further enlarged in paddy rice under DC relative to PC”
Claim · model-written summary
Under DC, paddy rice had lower seed setting rate and grain weight than under PC.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“under conventional paddy cultivation (PC) and plastic film mulched dry cultivation (DC)”
e7“paddy rice had lower seed setting rate and grain weight under DC than those under PC”
Claim · model-written summary
Upland rice showed less variation between DC and PC in grain filling, grain yield and its components than paddy rice.
- Taxon
- upland rice
Oryza sativat0 - Treatment
- DC and PCe1
- Outcome
- grain filling, grain yield and its componentse1
- Direction
- Less variationse1
- Comparator
- paddy ricee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice and Upland Rice”
e1“Less variations in grain filling, grain yield and its components between DC and PC were found in upland rice relative to paddy rice”
Claim · model-written summary
Upland rice had lower initial grain filling potential than paddy rice, especially for superior and medium grains.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- superior and medium grainse2
- Outcome
- initial grain filling potentiale2
- Direction
- lowere2
- Comparator
- paddy ricee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice and Upland Rice”
e2“Compared to paddy rice, upland rice showed lower initial grain filling potential, especially for the superior and medium grains, stronger competition for assimilates in both superior and medium grains at early and middle filling stages”
Claim · model-written summary
Upland rice had stronger competition for assimilates in superior and medium grains at early and middle filling stages than paddy rice.
- Taxon
- upland riceOryza sativat0
- Organ / stage
- superior and medium grainse2
- Outcome
- competition for assimilatese2
- Direction
- strongere2
- Qualifier
- early and middle filling stagese2
- Comparator
- paddy ricee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice and Upland Rice”
e2“Compared to paddy rice, upland rice showed lower initial grain filling potential, especially for the superior and medium grains, stronger competition for assimilates in both superior and medium grains at early and middle filling stages”
Claim · model-written summary
Less assimilate availability to the inferior grains may explain the low yield of upland rice.
- Taxon
- upland riceOryza sativat0
- Outcome
- low yielde3
- Qualifier
- less availability of assimilates to the inferior grainse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice and Upland Rice”
e3“leading to less availability of assimilates to the inferior grains, which could be attributed to low seed setting rate, grain weight and finally low yield”
Claim · model-written summary
Upland rice had less variation in grain-filling parameters than paddy rice under DC.
- Taxon
- upland riceOryza sativat0
- Treatment
- DCe4
- Outcome
- the parameters related to grain filling processese4
- Direction
- less variatione4
- Comparator
- paddy ricee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice and Upland Rice”
e4“Results also showed that upland rice had the less variation in the parameters related to grain filling processes in comparison with paddy rice under DC”
Claim · model-written summary
Under DC, paddy rice had a lower grain filling rate than upland rice.
Verbatim
t0“Paddy Rice and Upland Rice”
e5“Under the DC condition, the lower grain filling rate and longer active grain filling period were found in paddy rice relative to upland rice”
Claim · model-written summary
Under DC, paddy rice had a longer active grain filling period than upland rice.
Verbatim
t0“Paddy Rice and Upland Rice”
e5“Under the DC condition, the lower grain filling rate and longer active grain filling period were found in paddy rice relative to upland rice”
Claim · model-written summary
Paddy rice had a greater difference in grain filling synchronism between superior and inferior grains than upland rice.
Verbatim
t0“Paddy Rice and Upland Rice”
e6“Thus paddy rice showed greater difference in synchronism of grain filling between the superior and inferior grains relative to upland rice”
The same questions in other papers
mulching · yield · Oryza sativa (rice)Results differ
19 papers in the same direction as this paper · 106 in the opposite direction
- positive
- no effect
- positive
122 papers more in this group
See all 126 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.