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M. Sc. Dissertations

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20161
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Subject: Forestry × Author: Preeti Singh × End date: 2016 × Start date: 2016 ×
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    ThesisItemOpen Access
    Plus tree selection, progeny testing and reproductive biology of Khejri (Prosopis cineraria (L.) Druce)
    (CCSHAU, 2016) Preeti Singh; Bangarwa, K.S.
    The vital importance of Prosopis cineraria in present day context in terms of its multiple uses in general and lack of information on its genetic aspects especially reproductive biology, plus tree selection and progeny testing, promoted the present study. The study was conducted by collecting seeds from plus trees from areas around Bhiwani, Fatehabad, Bawal and Bhattu in Haryana based on the desirable characters of economic interest. The remaining part of this study comprised the investigation on phenology, floral biology and breeding systems were carried out on the trees growing at the field of Forestry department of CCS Haryana Agricultural University, Hisar during 2014-15. A considerable amount of variation for different morphological characters such as height, clear bole height, girth at breast height etc. was found among twenty one plus trees from Haryana. Ample genetic variation was also observed for field emergence, seedling height, basal diameter, root: shoot ratio etc. among the progenies of the selected plus trees. Among all the progenies, the progeny of PC11 from Bawal was found most outstanding followed by the progeny of PC8 from Fatehabad. Defoliation started during the month of November and continued till end of January. Initiation of leaf primordial was noticed during the last week of February at the terminal end of the branches. Panicle initiation started in the first week of March and continued till 2 nd of April. The floral buds started to open from first week of April to third week of April. The flowering pattern was asynchronous i.e. new flowers were developing at different times on the same tree. The trees were in full bloom from second week of April to third week of May. Maximum flower opening ranging from 84.38 to 93.82 per cent was recorded between 0800-0900 h. The shiny stigma a reflection of stigma receptivity occurred between 0800 to 1100 h. Khejri tree was found cross fertilizing in which percent pod set varied from 0 for selfing to 2.03 per cent for natural open pollination.