( ( ( ( ( ( ( ( Interspecific hybridization ) ( in ( guayule ( as ( ( ( a means ) ( of ( introducing ( desirable traits ) ) ) ) ( , ( ( requires ( basic information ) ) ( on ( ( the ( breeding behavior ) ) ( of ( the ( interspecific hybrids ) ) ) ) ) ) ) ) ) ) ) ) ( with regard ) ) ( to ( ( fertility and ) type ) ) ) ( of inheritance ) ) ( of ( the traits ) ) ) studied ) . )
(ROOT (NP (NP (JJ Interspecific) (NN hybridization)) (PP (IN in) (NP (NP (NN guayule)) (SBAR (IN as) (S (NP (NP (DT a) (NN means)) (PP (IN of) (S (VP (VBG introducing) (NP (JJ desirable) (NNS traits)))))) (, ,) (VP (VBZ requires) (NP (JJ basic) (NN information)) (PP (IN on) (NP (NP (DT the) (VBG breeding) (NN behavior)) (PP (IN of) (NP (DT the) (JJ interspecific) (NNS hybrids)))))))))) (PP (IN with) (NP (NN regard))) (PP (TO to) (NP (NN fertility) (CC and) (NN type))) (PP (IN of) (NP (NN inheritance))) (PP (IN of) (NP (DT the) (NNS traits))) (VP (VBN studied)) (. .)))
Interspecific hybridization in guayule as a means of introducing desirable traits, requires basic information on the breeding behavior of the interspecific hybrids with regard to fertility and type of inheritance of the traits studied.
(ROOT (S (NP (NP (DT The) (CD two) (JJ basic) (NNS types)) (PP (IN of) (NP (NN competition)))) (VP (VBP are) (VP (VBN called) (NP (ADJP (JJ instraspecifc) (CC and) (JJ interspecific)) (NN competition)))) (. .)))