Bookcover of Effect of salinity on genetic architecture of Tomato
Booktitle:

Effect of salinity on genetic architecture of Tomato

Scholars' Press (2013-10-03 )

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ISBN-13:

978-3-639-70021-3

ISBN-10:
363970021X
EAN:
9783639700213
Book language:
English
Blurb/Shorttext:
It has been suggested that reciprocal recurrent selection, diallel selective mating, multiple crosses and bi-parental mating could be effective breeding approaches for developing salt tolerant genotypes from potential breeding material suggested in the present study. The following recommendations for tomato improvement under salinity are suggested: (i)The main emphasis should be given to good plant stand (germination and seedling establishment) with lower Na+/K+ ratio in root or shoot. (ii)Tomato breeding should also resort to pyramiding the characteristics since, no described traits alone is likely to produce a tolerant genotype. (iii)Threshold limit of salinity for tomato, up to which yield reduces very little or no reduction occur, is 2.5-3.0 dSm-1 and after it, every increase of 1.0 dSm-1 in EC results in a yield reduction of about 9-10%. The upper limit of salinity tomato crop improvement is 6.0 dSm-1. Beyond this, breeding programmes are not feasible because yield loss surpass than 50%. (iv)Yield reduction at moderate salinity is mainly due to reduction in average fruit weight (while, at higher salinity, yield reduction is due to reduced number of fruit per plant).
Publishing house:
Scholars' Press
Website:
http://www.scholars-press.com
By (author) :
Jogendra Singh, E.V. Divakar Sastry
Number of pages:
180
Published on:
2013-10-03
Stock:
Available
Category:
Agriculture, horticulture, forestry, fishery, nutrition
Price:
79.90 €
Keywords:
genetics, salinity, Heterosis, Tomato, SCA, GCA

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