Pusa 150 is a breeding line which was derived through a convergent breeding approach involving several high yielding non-aromatic rice varieties such as Taichung Native 1, IR8, IR22 etc., and traditional Basmati rice variety, Basmati 370, which was used as donor for quality traits.
The cultivar OAC-Rex [ 7], on the other hand, was developed through crosses to a breeding line, which was derived from interspecific crosses to PI440795.
Sheila and the resistant breeding line, which were immediately frozen in liquid nitrogen after harvesting, using the DNeasy Plant Kit (Qiagen, Germany).
The BB pyramided deepwater breeding lines, which are developed through MAS and phenotypic selection, will be of practical value in providing durable bacterial blight resistance in the deepwater growing region where control through chemicals under deepwater situation was less effective.
The breeding of the indica restorer line R1128 was from a multiple cross between SH527 and an inbred F4 line which was generated from the cross between R855 and a temporary F4 line named 1033, which was introduced from America.
Piyasatin et al. (2007) simulated the efficiency of GS in a cross of inbred lines, which is common in plant breeding but not in animal breeding.
It is acknowledged that one expense not considered for allocating resources was cost of developing DH lines, which is certainly a considerable cost for breeding programs.
This type of experimental breeding is the origin of new plant and animal lines, which are an important part of making laboratory stocks for basic research.
IT84S-2246 is an IITA breeding line which has strong resistance to several root-knot nematodes including Rk-virulent M.incognita and Rk-aggressive M. javanica[ 29], aphids, bruchids and thrips and several other diseases [ 30].
The breeding objectives in Pietrain (sire line) are distinct from those in the Landrace and Large White (dam lines) which are more similar.
