. Bulletin du Jardin botanique de Buitenzorg. Plants -- Indonesia; Plants. Yampolsky : Siiidy of OU puLin. 149 our kiiowledge of germination in palms as well as in otiier nionocotyledons. TSCHIRCH P^) and liis school hâve doue mucli to furtlier investigations along tliat line. Still, tlie number of detailed investigations on tlie relation between haustorium and endosperm are few. We hâve yet to await a thorougli investigation of so conspicuoiis an organ as the haustorium of the coco-nut in its relation to the endosperm, ahhôugli the cultural phase of that pahii has been exploited inteiligently
. Bulletin du Jardin botanique de Buitenzorg. Plants -- Indonesia; Plants. Yampolsky : Siiidy of OU puLin. 149 our kiiowledge of germination in palms as well as in otiier nionocotyledons. TSCHIRCH P^) and liis school hâve doue mucli to furtlier investigations along tliat line. Still, tlie number of detailed investigations on tlie relation between haustorium and endosperm are few. We hâve yet to await a thorougli investigation of so conspicuoiis an organ as the haustorium of the coco-nut in its relation to the endosperm, ahhôugli the cultural phase of that pahii has been exploited inteiligently for countless centuries. The fruit of tlie oil pahn because of its size and because it offers no serious technical difficuities is a most favorable object for investigation. If we turn now to the gross détails of germination we can follow the steps in the process very readily. We hâve seen that the fruit of the oil palm can roughly be divided into pericarp, shell and kernel. When the fleshy, oil containing pericarp is removed the germ pores of the seed become visible. As a rule only one is functional since the rule is that one embryo develops in each seed. Attention has also been called to the prese[ice of two, three and four embryos within a single seed. PFITZEK (2^) makes the foUowing grouping of palm fruits based upon the présence or absence of definite régions for the émergence of the embryo during germination. 1). No definite locus in the shell —the embryo breaks-through the shell as a resuit of internai pressure exerted by the growing embryo. 2). Shell provided with de- finite areas less résistant than the rest of the shell — strands of soft tissue pass through those areas enabling the embryo to push its way through with but little ré- sistance. 3). Présence of definite open- ings in the shell provided with plugs which are pushed out through the openings(germ pores) at germination. The variations that exist in the last group hâve been indicated by Pfitzer
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1898
