Abstract
Field experiments were conducted in 2009–10 and 2010–11 to standardise the sowing time and planting ratio of the parental lines of the recently released Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506. The results indicated that the optimum sowing time of parental lines of NRCHB 506 is the third week of October to achieve higher yield of good quality hybrid seed. Optimum planting ratio of female to male parental line for hybrid seed production was 8:2. Further increase in number of female rows per male row decreased the plant and plot yield of the hybrid seed production plot. The results pertaining to flowering phenology and characters, seed yield and its attributing traits indicated that delay in sowing beyond October reduces the value of those characters significantly leading to decline in seed yield from seed parent. The primary factor responsible for the reduction of values in the late sowing was the higher temperature during reproductive and seed feeling stage. Sowing in October and growing of plants in relatively high temperature extended the vegetative phase, i e delayed the flowering by four days as compared to that in November sowing which experienced a lower temperature during early growth stage. Delay in sowing reduced the flowering duration which had a direct impact on the number of flowers, siliqua set, seeds/siliqua and finally seed yield/plant.
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Claims 8
Claim · model-written summary
Sowing parental lines in the third week of October gave higher-quality hybrid seed yield.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)
Brassica junceae1 - Material
- NRCHB 506e0
- Treatment
- third week of Octobere0
- Outcome
- yield of good quality hybrid seede0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that the optimum sowing time of parental lines of NRCHB 506 is the third week of October to achieve higher yield of good quality hybrid seed.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
The optimal female-to-male planting ratio for hybrid seed production was 8:2.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Outcome
- Optimum planting ratioe0
- Value
- 8:2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum planting ratio of female to male parental line for hybrid seed production was 8:2.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
Increasing female rows per male row beyond the optimum reduced plant and plot hybrid seed yield.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- Further increase in number of female rows per male rowe0
- Outcome
- plant and plot yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further increase in number of female rows per male row decreased the plant and plot yield of the hybrid seed production plot.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
Sowing later than October significantly reduced flowering traits and seed yield from the seed parent.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- delay in sowing beyond Octobere0
- Outcome
- seed yield from seed parente0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delay in sowing beyond October reduces the value of those characters significantly leading to decline in seed yield from seed parent.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
October sowing delayed flowering by four days versus November sowing.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- Sowing in Octobere0
- Outcome
- floweringe0
- Direction
- delayede0
- Value
- four dayse0
- Comparator
- November sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sowing in October and growing of plants in relatively high temperature extended the vegetative phase, i e delayed the flowering by four days as compared to that in November sowing”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
October sowing extended the vegetative phase relative to November sowing.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- Sowing in Octobere0
- Outcome
- vegetative phasee0
- Direction
- extendede0
- Comparator
- November sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sowing in October and growing of plants in relatively high temperature extended the vegetative phase, i e delayed the flowering by four days as compared to that in November sowing”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
Delayed sowing shortened flowering duration and thereby reduced flowers, siliqua set, seeds per siliqua, and seed yield per plant.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- Delay in sowinge0
- Outcome
- flowering duratione0
- Direction
- reducede0
- Qualifier
- direct impact on the number of flowers, siliqua set, seeds/siliqua and finally seed yield/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delay in sowing reduced the flowering duration which had a direct impact on the number of flowers, siliqua set, seeds/siliqua and finally seed yield/plant.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
Claim · model-written summary
Higher reproductive-stage temperature was attributed as the main cause of late-sowing declines.
- Taxon
- Indian mustard (Brassica juncea L. Czern. & Coss)Brassica junceae1
- Treatment
- higher temperature during reproductive and seed feeling stagee0
- Outcome
- reduction of values in the late sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The primary factor responsible for the reduction of values in the late sowing was the higher temperature during reproductive and seed feeling stage.”
e1“Indian mustard (Brassica juncea L. Czern. & Coss) hybrid NRCHB 506.”
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sowing time · yield · Brassica juncea (Indian mustard)Positive and negative results
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