Shatter resistance in crop plants

Evaluation of the Agronomic Performance of Vernonia (Vernonia galamensis) Germplasm

“…Similarly, the dehiscence of the heads can also be improved through breeding. This has been demonstrated in several other field crops (Kadkol et al, 1989;Morgan et al, 2000). Moreover, source of shattering resistance were identified in V. subsp.…”

Identification of RAPD markers linked to recessive genes conferring siliqua shatter resistance in Brassica rapa

“…The linkage map of B. rapa constructed by Song et al (1991) suggested some structural rearrangements (insertions, deletions and inversions) had occurred after the duplication of chromosomes during its evolution. Shattering is thought to be a wild-type character and resistance to shattering is thought to be an evolutionary consequence of domestication of crop plants and is a result of mutation in shatter-susceptible ancestors (Kadkol et al 1989). Therefore, it is likely that the recessive alleles, sh1 and sh2, may have originated from independent mutations at the two duplicated loci during the evolution of B. rapa.…”

Physiological Constraints and Their Genetic Manipulation

“…Significant differences in measures of shatter tolerance were observed among cultivars of B. napus, B. campestris and B. juncea. However, there was also substantial within plant variation associated with pod size rather than with the position in the inflorescence from which the pod was obtained (Kadkol et al 1985;1989). This indicated that the sampling procedure was crucial to accurate assessments of genotype differences in shatter tolerance, and measurements of few pods from many plants adjusted for pod size was recommended.…”