Download PDF by Shri Mohan Jain, P.M. Priyadarshan: Breeding Plantation Tree Crops: Tropical Species

By Shri Mohan Jain, P.M. Priyadarshan

ISBN-10: 0387711996

ISBN-13: 9780387711997

Tree species are essential to human wishes. because of their lengthy existence cycle and environmental sensitivity, breeding timber for sustainable creation is an impressive problem on order to fulfill the calls for of turning out to be human inhabitants and industries. Fruit plants akin to apple, cocoa, mango, citrus, litchi, pear, dates, and coconut or business vegetation together with rubber and tea, enhancing yield less than the optimum, sub-optimal and marginal components demand a unified around the world efforts. whereas the individuality of coconut as ‘kalpavriksha’ (Sanskrit-meaning tree of lifestyles) makes its presence in each continent from some distance East to South the USA, tree plants like cocoa, oil palm, rubber, apple, peach and walnut turn out their environmental sensitivity in the direction of tropical, sub tropical and temperate climates. Date palm is integral for wasteland weather. therefore, from delicate beverages to breweries to grease to tires, the price addition bargains a spectrum of goods to human variety, enriched with dietary, environmental, monetary, and alternate comparable attributes. This quantity is a compilation of data on breeding of tropical tree species and provides first hand entire wisdom to investigate, educate, and make guidelines.

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In particular, these are plantain hybrids resistant to SLSDs and with a fruit quality similar to that of plantains. This approach is used especially by CARBAP and IITA to develop diploids specific to certain sub-groups such as plantains and the East African highland bananas. 3 Synthesis of Secondary Triploids from Tetraploid Hybrids In view of the problems associated with the 3x/2x strategy and the fertility of the tetraploids thus obtained, the latter were soon regarded as intermediate products for the synthesis of secondary triploids when crossed with diploids.

Seven tetraploid hybrids from different genetic backgrounds were tested along with several diploid reference clones (both wild and edible) that represented the whole range of reaction to BLS, from highly resistant to highly susceptible. The experiments were established in six countries. Four years later, the recommendations were made to release three clones for local consumption with good performances and high resistance to BLS: FHIA-01 and FHIA-02 as dessert banana varieties and FHIA-03 as cooking banana.

The breeders conceived the idea of adding one set of chromosomes from a diploid carrying heritable resistance to disease to the three sets from the mother (Fig. 7; Menendez and Shepherd 1975). 6; Sanford 1983; Veilleux 1985). The fact that heptaploid hybrids in progenies can be obtained from some triploid varieties (Prata-AAB and Poingo-AAB) clearly suggests the formation of 4n eggs in Musa arising from a first-division restitution (FDR) 1 Genetic Improvement of Banana 27 Fig. 6 Development of tetraploid varieties by restitution of maternal gametes in triploid varieties and from a second-division restitution (SDR) of the mother parent.

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Breeding Plantation Tree Crops: Tropical Species by Shri Mohan Jain, P.M. Priyadarshan


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