Economics perspectives on collaborative plant breeding for conservation of genetic diversity on farm.

Author(s):  
M. Smale
1988 ◽  
Vol 24 (3) ◽  
pp. 311-320 ◽  
Author(s):  
D. M. Maurya ◽  
A. Bottrall ◽  
J. Farrington

SUMMARYThe present structure of plant breeding and seed multiplication in India is highly centralized. Furthermore, only a small number of new varieties is officially released each year. The system therefore appears inappropriate for the requirements of the large proportion of Indian farmers located in risk-prone and highly diverse environments. An alternative strategy is described whose central feature is close matching of the characteristics of farmers' traditional rice varieties with those of advanced breeders' lines. A selection from these lines is then distributed in small quantities for on-farm trials managed by farmers themselves. If the success of these initial efforts is to be sustained, a more decentralized approach to breeding and multiplication will be necessary.


1993 ◽  
Vol 29 (4) ◽  
pp. 509-519 ◽  
Author(s):  
Louise Sperling ◽  
Michael E. Loevinsohn ◽  
Beatrice Ntabomvura

SummaryVarietal selection is particularly difficult for very heterogeneous environments where farmers have a range of preferences. To address these issues in Rwanda, local bean experts, generally women, are invited to the research station to assess cultivars and to select those they prefer for their plots. Farmers use observed yield as only one of several criteria to predict varietal performance in their more stressed home environments. The varieties they choose are often higher yielding on-farm and are retained longer by farmers than those selected by the breeders. The results of early farmer involvement also compare favourably with those of the standard breeding programme in terms of enhanced genetic diversity and reduced research costs. There are few pre-conditions for developing such a client-driven breeding programme.Papel del agricultor en la selección de variedades para una estación inaestigación


2005 ◽  
Vol 124 (6) ◽  
pp. 576-581 ◽  
Author(s):  
L. Lioi ◽  
A. R. Piergiovanni ◽  
D. Pignone ◽  
S. Puglisi ◽  
M. Santantonio ◽  
...  

Author(s):  
Hausila Prasad Singh ◽  
Om Prakash Raigar ◽  
Rakesh Kumar Chahota

2002 ◽  
Vol 10 (4) ◽  
pp. 409-415
Author(s):  
ZHU YouYong ◽  
Bao-Rong Lu ◽  
WANG YunYue ◽  
◽  

2021 ◽  
Author(s):  
Andrei Kouranov ◽  
Charles Armstrong ◽  
Ashok Shrawat ◽  
Vladimir Sidorov ◽  
Scott Huesgen ◽  
...  

Abstract Naturally occurring chromosomal crossovers (CO) during meiosis are a key driver of genetic diversity. The ability to target CO at specific allelic loci in hybrid plants would provide a significant advantage to the plant breeding process by facilitating trait introgression, and potentially increasing the rate of genetic gain. We present the first demonstration of targeted CO in hybrid maize utilizing the CRISPR Cas12a system. Our experiments showed that stable and heritable targeted CO can be produced in F1 somatic cells using Cas12a at a significantly higher rate than the natural CO in the same interval. These results are a step towards the use of RNA guided nuclease technology to simplify the creation of targeted genome combinations in progeny and accelerate breeding.


Author(s):  
Stephen Smith ◽  
David Bubeck ◽  
Barry Nelson ◽  
Jason Stanek ◽  
Justin Gerke

Crop Science ◽  
2020 ◽  
Author(s):  
Shilpa Swarup ◽  
Edward J. Cargill ◽  
Kate Crosby ◽  
Lex Flagel ◽  
Joel Kniskern ◽  
...  

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