Breeding Brassica napus for Shatter Resistance

Hossain, Shanoor; Kadkol, Gururaj; Raman, Rosy; Salisbury, P. A.; Raman, Harsh

doi:10.5772/29051

Cited by 13 publications

(14 citation statements)

References 59 publications

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“…Rapeseed pod resistance in the field can be determined using various methods: seed counting after harvest, count shattered silique, manual bending of silique, vibrate whole plants, etc. [14]. The method used to determine seed losses during harvesting involved crop treatment with a specially developed tractor-mounted reel, which imitated the impact of combine harvester reel tines on OSR pods during harvesting ( Figure 2).…”

Section: Determination Of Osr Seed Losses During Harvestingmentioning

confidence: 99%

“…Unusually for major agricultural field crops, OSR tends to shed its seed as soon as the fruits become fully ripe, reflecting the primitive need for seed dissemination [11,12]. The botanical name of Brassicaceae fruits is siliques or agronomically, pods, which enclose the seeds during their development [13,14]. Siliques consist of two valves (i.e., the carpels or fruit walls) that form two locules separated by the replum.…”

Section: Introductionmentioning

confidence: 99%

“…OSR pod shattering can be reduced by lowering the tension occurring in the pod wall or by widening the dehiscence zone [17]. The process of dehiscence usually starts at the proximal end of the siliques [14]. In addition, physical pressure build up, as the silique dries, creates mechanical stresses that contribute to the pod shattering [11].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Effectiveness of Pod Sealants in Increasing Pod Shattering Resistance in Oilseed Rape (Brassica napus L.)

et al. 2019

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Shattering of pods of oilseed rape (Brassica napus L.) is a major cause of seed yield losses prior to and during harvesting. In order to reduce shattering, researchers have been engaged in the development of special preparations that are known as pod sealants (PS). Despite the fact that there are already developed and commercialized PSs that have only been effective on seed yield preservation under certain environmental conditions, there is still a need to create a more versatile and efficient PS. Currently, the most promising method of controlling pod shattering in oilseed rape is the application of our developed novel acrylic- and trisiloxane-based pod sealant (PS4). The effectiveness of PS4 and three commercial pod sealants (PS1, PS2, and PS3) was assessed in this comparative study. By spraying an oilseed rape crop with PS4, natural seed loss can be reduced by 20–70%, depending on the prevailing weather conditions, and loss of seeds during harvest can be reduced by more than three-fold compared with that by the control treatment. Thus, the overall results demonstrated that by applying a novel pod sealant (PS4) to oilseed rape crops 2 weeks before harvest can increase the net profit margin by €30–€150 ha−1. The life cycle assessment showed that during 2014–2016 oilseed rape cultivation, the largest effect on global warming emission (kg CO2 eq) reduction was experimental sealant PS4, i.e., approximately 17% compared to the control.

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Section: Determination Of Osr Seed Losses During Harvestingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Effectiveness of Pod Sealants in Increasing Pod Shattering Resistance in Oilseed Rape (Brassica napus L.)

et al. 2019

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“…Pod dehiscence is a natural process where plants release their seeds for survival and propagation in the wild. Although the mechanism has advantages in nature, rape pod dehiscence in agriculture determines the level of yield loss . The resistance of rape pod dehiscence depends on morphological, anatomical and biochemical factors.…”

Section: Introductionmentioning

confidence: 99%

“…Although the mechanism has advantages in nature, rape pod dehiscence in agriculture determines the level of yield loss. 3 The resistance of rape pod dehiscence depends on morphological, anatomical and biochemical factors. Pod dehiscence during maturation is determined by the formation of methylene and auxin during biochemical processes.…”

Section: Introductionmentioning

confidence: 99%

Application of rape pod sealants to reduce adverse environmental impacts

et al. 2017

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Mapping of QTL for seed dormancy in a winter oilseed rape doubled haploid population

et al. 2013

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Following winter oilseed rape cultivation, considerable numbers of volunteer oilseed rape plants may occur in subsequent years in following crops. The appearance of volunteer oilseed rape plants is based on the capability of the seeds to become secondary dormant and to survive in this stage for many years in the soil. Genetic reduction of secondary seed dormancy in oilseed rape could provide a means to reduce the frequency of volunteer plants and especially the dispersal of transgenic oilseed rape. The objective of the present study was to analyse the inheritance of primary and secondary seed dormancy in a winter oilseed rape doubled haploid population derived from the cross Express 617 × R53 and to study correlations to other seed traits. Field experiments were performed in Germany for 2 years at two locations with two replicates. Seeds harvested from open pollinated plants were used for all analyses, including a laboratory test for seed dormancy. A previously developed molecular marker map of the doubled haploid population was used to map QTL of the relevant traits. For primary, secondary and total seed dormancy, the results showed significant effects of the genotypes and their interactions, with years and locations. Two, four and five QTL were detected for primary, secondary and total seed dormancy which explained 19, 35 and 42 % of the phenotypic variance, respectively. Results show that secondary seed dormancy is a heritable trait and that selection for low secondary seed dormancy is possible.

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Breeding Brassica napus for Shatter Resistance

Cited by 13 publications

References 59 publications

Evaluation of the Effectiveness of Pod Sealants in Increasing Pod Shattering Resistance in Oilseed Rape (Brassica napus L.)

Evaluation of the Effectiveness of Pod Sealants in Increasing Pod Shattering Resistance in Oilseed Rape (Brassica napus L.)

Application of rape pod sealants to reduce adverse environmental impacts

Mapping of QTL for seed dormancy in a winter oilseed rape doubled haploid population

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