scholarly journals Harnessing wild relatives of pearl millet for germplasm enhancement: Challenges and opportunities

Crop Science ◽  
2020 ◽  
Author(s):  
Shivali Sharma ◽  
Rajan Sharma ◽  
Mahalingam Govindaraj ◽  
Rajendra Singh Mahala ◽  
C. Tara Satyavathi ◽  
...  
Keyword(s):  
Pearl Millet ◽  
Wild Relatives ◽  
Germplasm Enhancement ◽  
Challenges And Opportunities

scholarly journals A Rapid Method of Evaluating Growth Rate in Pearl Millet and Its Weedy and Wild Relatives 1

Crop Science ◽  
1984 ◽  
Vol 24 (6) ◽  
pp. 1187-1191 ◽  
Author(s):  
P. J. Bramel‐Cox ◽  
D. J. Andrews ◽  
F. R. Bidinger ◽  
K. J. Frey
Keyword(s):  
Growth Rate ◽  
Rapid Method ◽  
Pearl Millet ◽  
Wild Relatives

scholarly journals Molecular Markers and Germplasm Enhancement: A Case Study in Tomato

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 693a-693
Author(s):  
V. Meglic ◽  
R.T. Chetelat
Keyword(s):  
Molecular Markers ◽  
Species Group ◽  
Wild Relatives ◽  
Linkage Maps ◽  
Germplasm Enhancement ◽  
Solanum Lycopersicoides ◽  
Genetic Stocks ◽  
Rflp Rapd ◽  
Selection Of

The C.M. Rick Tomato Genetic Resources Center (TGRC) is a genebank of wild relatives, monogenic mutants, and miscellaneous genetic stocks of tomato. The wild species group includes representatives of all nine Lycopersicon spp., as well as four related Solanum species. One of the roles of the TGRC has been to foster the use of the widest available gene pool for tomato researchers. The wild nightshade Solanum lycopersicoides possesses a number of potentially useful traits, but has been untapped by breeders because of sterility and incompatibility barriers. We are using molecular markers to identify alien chromosomal segments introgressed from S. lycopersicoides into tomato. This project involves development of RFLP, RAPD, and isozyme marker linkage maps and their use in selection of homozygous segmental substitutions in backcross inbred progenies. In this fashion, a large proportion of the S. lycopersicoides genome has been integrated into the cultivated tomato. This study has also provided information on the nature of sterility and novel variation in hybrid derivatives.

Multivariate analysis of recombination between wild and cultivated genomes within the primary gene pool of pearl millet (Pennisetum typhoides)

Genome ◽  
1992 ◽  
Vol 35 (2) ◽  
pp. 208-219 ◽  
Author(s):  
T. Robert ◽  
A. Sarr
Keyword(s):  
Multivariate Analysis ◽  
Pearl Millet ◽  
Evolutionary History ◽  
Wild Relatives ◽  
Genome Recombination ◽  
History Of ◽  
Morphological And Physiological Traits ◽  
Primary Gene Pool ◽  
Different Levels ◽  
Primary Gene

Recombination between wild and cultivated genomes of pearl millet were studied by multivariate analysis on morphological and physiological traits in backcross progenies from four cultivated × wild crosses. The cultivated genotypes, Souna and Thiotandé, have evolved in sympatric and allopatric situations, respectively, with wild forms. The distinct evolutionary history of the cultivated genotypes seems to have an incidence on the segregation pattern of their progenies with the wild relatives. Segregation distortions favouring the recovery of "wild-like" phenotypes were observed in progenies with Thiotandé as the cultivated parent. They are probably a consequence of the genetic divergence between this genotype and wild forms already shown at different levels of observation (histological, physiological, and genetic). On the other hand, when Souna is the cultivated parent, the recovery of "cultivated-like" phenotypes was shown to be easier with Souna as the female. This could be due to preferential homogametic fertilization favouring "Souna-type" gametes on Souna pistils owing to intergametophytic competition through a pollen–pistil interaction, already evidenced on the genotypes used here.Key words: pearl millet, multivariate analysis, segregation distortion, wild/cultivated genome recombination, genetic resources.

Metabolic signalling and the partitioning of resources in plant storage organs

1999 ◽  
Vol 133 (3) ◽  
pp. 243-249 ◽  
Author(s):  
NIGEL G. HALFORD
Keyword(s):  
Dry Weight ◽  
Wild Relatives ◽  
Crop Plants ◽  
Wild Plants ◽  
Young Plant ◽  
Carbon And Nitrogen ◽  
Cultivated Potato ◽  
Metabolic Signalling ◽  
Storage Organs ◽  
Plant Storage

The most important harvested organs of crop plants, such as seeds, tubers and fruits, are often described as assimilate sinks. They play little or no part in the fixation of carbon through the production of sugars through photosynthesis, or in the uptake of nitrogen and sulphur, but import these assimilated resources to support metabolism and to store them in the form of starch, oils and proteins. Wild plants store resources in seeds and tubers to later support an emergent young plant. Cultivated crops are effectively storing resources to provide us with food and many have been bred to accumulate much more than would be required otherwise. For example, approximately 80% of a cultivated potato plant's dry weight is contained in its tubers, ten times the proportion in the tubers of its wild relatives (Inoue & Tanaka 1978). Cultivation and breeding has brought about a shift in the partitioning of carbon and nitrogen assimilate between the organs of the plant.

Continuous hydrogenolysis of acetal-stabilized lignin in flow

2021 ◽  
Author(s):  
Wu Lan ◽  
Yuan Peng Du ◽  
Songlan Sun ◽  
Jean Behaghel de Bueren ◽  
Florent Héroguel ◽  
...  
Keyword(s):  
Steady State ◽  
Challenges And Opportunities

We performed a steady state high-yielding depolymerization of soluble acetal-stabilized lignin in flow, which offered a window into challenges and opportunities that will be faced when continuously processing this feedstock.

Sign in / Sign up

Export Citation Format

Share Document