Paper · 2004 · Yunnan Nongye Daxue xuebao

Effects of the Proportion of NH_4~+ and NO_3~- on Callus Formation and Plant Regeneration of Embryo of Indica Rice (Variety Zhenshan 97)

Luo Tiankuan; Zhang Xiao-ling

3
claims
6
verbatim quotes
1
citations
1
research areas
—
Not open access

Abstract

The culture conditions of callus formation and plant regeneration of 70% mature embryo and mature embryo of indica rice (variety Zhenshan 97) were studied, by selecting and differentiating the huge elements and the different photoperiod condition.The results showed that the proportion of NH_4~+ and NO_3~- is very important in huge elements. The calli inductivity and plantlet regenerative rate were the highest when the embryo was cultured in the media that the proportion of NH_4~+/NO_3~- equals 2/1. At the same time we found that the plantlet regeneration rate of the callus which was cultured by 12h light treatment per day was higher then cultured in dark all day.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A 2/1 ammonium to nitrate ratio gave the highest rice callus induction.

Organ / stage
embryoe0
Treatment
NH_4~+/NO_3~- equals 2/1e0
Outcome
calli inductivitye0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The calli inductivity and plantlet regenerative rate were the highest when the embryo was cultured in the media that the proportion of NH_4~+/NO_3~- equals 2/1.”

✓ located verbatim in the source · abstract, characters 343–503 · show in text ↑
t0

“Effects of the Proportion of NH_4~+ and NO_3~- on Callus Formation and Plant Regeneration of Embryo of Indica Rice (Variety Zhenshan 97)”

✓ located verbatim in the source · title, characters 0–136 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A 2/1 ammonium to nitrate ratio gave the highest rice plantlet regeneration rate.

Organ / stage
embryoe0
Treatment
NH_4~+/NO_3~- equals 2/1e0
Outcome
plantlet regenerative ratee0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The calli inductivity and plantlet regenerative rate were the highest when the embryo was cultured in the media that the proportion of NH_4~+/NO_3~- equals 2/1.”

✓ located verbatim in the source · abstract, characters 343–503 · show in text ↑
t0

“Effects of the Proportion of NH_4~+ and NO_3~- on Callus Formation and Plant Regeneration of Embryo of Indica Rice (Variety Zhenshan 97)”

✓ located verbatim in the source · title, characters 0–136 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Twelve hours of light daily yielded a higher rice plantlet regeneration rate than continuous darkness.

Treatment
12h light treatment per daye0
Outcome
plantlet regeneration ratee0
Direction
highere0
Comparator
dark all daye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“the plantlet regeneration rate of the callus which was cultured by 12h light treatment per day was higher then cultured in dark all day.”

✓ located verbatim in the source · abstract, characters 535–671 · show in text ↑
t0

“Effects of the Proportion of NH_4~+ and NO_3~- on Callus Formation and Plant Regeneration of Embryo of Indica Rice (Variety Zhenshan 97)”

✓ located verbatim in the source · title, characters 0–136 · show in text ↑

light · growth · Oryza sativa (rice)Positive and negative results

95 papers: 55 positive, 40 negative or no effect

54 papers in the same direction as this paper · 38 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

91 papers more in this group

See all 95 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.