Inbreeding and Population Structure

Author(s):  
Daniel L. Hartl

Inbreeding and its consequences are the main subject of Chapter 3, beginning with the concepts of identity by descent versus identity by state, the inbreeding coefficient F, genotype frequencies with inbreeding, and calculation of the inbreeding coefficient from pedigrees. Inbreeding and heterosis are discussed along with the effects of inbreeding in humans and other organisms, regular systems of mating (selfing and partial selfing, sib mating), and the utility of recombinant inbred lines. The chapter emphasizes the intimate connection between inbreeding and hierarchical population structure as measured by the F-statistics.

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
M. A. Saleem ◽  
G. K. Naidu ◽  
H. L. Nadaf ◽  
P. S. Tippannavar

Spodoptera litura an important insect pest of groundnut causes yield loss up to 71% in India. Though many effective chemicals are available to control Spodoptera, host plant resistance is the most desirable, economic and eco-friendly strategy. In the present study, groundnut mini core (184), recombinant inbred lines (318) and elite genotypes (44) were studied for their reaction to Spodoptera litura under hot spot location at Dharwad. Heritable component of variation existed for resistance to Spodoptera in groundnut mini core, recombinant inbred lines and elite genotypes indicating scope for selection of Spodoptera resistant genotypes. Only 29 (15%) genotypes belonging to hypogaea, fastigiata and hirsuta botanical varieties under mini core set, 15 transgressive segregants belonging to fastigiata botanical variety among 318 recombinant inbred lines and three genotypes belonging to hypogaea and fastigiata botanical varieties under elite genotypes showed resistance to Spodoptera litura with less than 10% leaf damage. Negative correlation existed between resistance to Spodoptera and days to 50 per cent flowering indicating late maturing nature of resistant genotypes. Eight resistant genotypes (ICG 862, ICG 928, ICG 76, ICG 2777, ICG 5016, ICG 12276, ICG 4412 and ICG 9905) under hypogaea botanical variety also had significantly higher pod yield. These diverse genotypes could serve as potential donors for incorporation of Spodoptera resistance in groundnut.


Heredity ◽  
1997 ◽  
Vol 79 (2) ◽  
pp. 190-200 ◽  
Author(s):  
Wybe van der Schaar ◽  
Carlos Alonso-Blanco ◽  
Karen M Léon-Kloosterziel ◽  
Ritsert C Jansen ◽  
Johan W van Ooijen ◽  
...  

Author(s):  
Yelun Zhang ◽  
Yaning Meng ◽  
Liangjie Lv ◽  
Yingjun Zhang ◽  
Kai Zhang ◽  
...  

Genetics ◽  
2006 ◽  
Vol 173 (4) ◽  
pp. 2419-2419
Author(s):  
K W Broman

Heredity ◽  
1997 ◽  
Vol 79 (2) ◽  
pp. 190-200 ◽  
Author(s):  
WYBE VAN DER SCHAAR ◽  
CARLOS ALONSO-BLANCO ◽  
KAREN M LÉON-KLOOSTERZIEL ◽  
RITSERT C JANSEN ◽  
JOHAN W VAN OOIJEN ◽  
...  

2021 ◽  
Vol 282 ◽  
pp. 110025
Author(s):  
Daniele Viana da Costa ◽  
Claudia Lougon de Almeida Paiva ◽  
Cíntia dos Santos Bento ◽  
Cláudia Pombo Sudré ◽  
Thâmara Figueiredo Menezes Cavalcanti ◽  
...  

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